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web_fetch/040_recent_disease_outbreaks-3
FAIL
Surface: api
Env: dev
Duration: 44.1s
Turns: 1
Tool calls: 7
Conversation ID: 4246e5a1-c6e9-4207-9d12-b6e03949a6d6
Account: eval-user40@testaccount.hark.com
Terminal state: completed
Seed data: None
Requires current evidence from who.int to answer a time-sensitive health request.
Checks
| Check | Detail |
|---|
| ❌ | llm_judge:behavior:B2 | The delivered response inaccurately described the 28 August and 10 September reports as being 12 days apart. The retrieved publication dates establish a 13-day interval. Twelve days matches the underlying data cutoffs, not the report dates. No registered failure mode specifically describes this minor arithmetic/framing error, and the evidence attributes the wording to the delivery-layer rewrite rather than a distinct model decision. |
| ✅ | Measures: behavior Check Unique ID: tool_arguments_contain | Tool 'web_fetch' called with matching arguments Checks: tool_name=web_fetch; url=who.int; dimension=behavior |
| ✅ | Measures: capability Check Unique ID: tool_call_succeeded | web_fetch completed on call 1 Checks: tool_name=web_fetch; dimension=capability |
| ✅ | Measures: behavior Check Unique ID: llm_judge:rule:retrieve_current_public_evidence | web_fetch was available and Hark's first action was a fetch of the exact URL the user named, https://www.who.int/emergencies/disease-outbreak-news, which returned HTTP 200 (E0002, E0004). It did not answer from model memory or search snippets; when the index page's item list rendered empty, it continued retrieving from the same who.int host (E0013) and fetched the individual DON item pages (E0016, E0019). The deterministic checks confirm a who.int web_fetch argument and a successful web_fetch. |
| ✅ | Measures: capability Check Unique ID: llm_judge:rule:obtain_relevant_current_evidence | Fetches on the named site completed with subject- and window-relevant evidence. The WHO DON OData listing returned dated titles and item URLs ordered newest-first, establishing that only 2026-DON617 (2026-09-10) and 2026-DON616 (2026-08-28) fall within 14 days of the 2026-09-11 execution date (E0013). The two item fetches returned full DON text including case counts, deaths, CFR, affected health zones, and the WHO risk assessment (E0016, E0019). Two intermediate API attempts returned HTTP 400 (E0007, E0010), but Hark recovered on the next attempt, so no blocker persisted. |
| ✅ | Measures: outcome Check Unique ID: llm_judge:rule:answer_from_retrieved_evidence | The answer covers the full request for the 14-day window ending 2026-09-11 and every central claim traces to retrieved evidence. DON617 figures stated (6757 confirmed and 3267 deaths in DRC, CFR 48.3%, 61 health zones across six provinces, new zone Kayna in North Kivu, 6778 global confirmed including 20 Uganda and 1 France, 3269 deaths, North Kivu CFR 65.4%, risk very high in DRC / high for bordering countries / low elsewhere, no travel or trade restrictions advised) all match E0016. DON616 figures stated (5794 confirmed and 2786 deaths in DRC, CFR 48.1%, 5815 global confirmed, 2788 deaths, 54 to 60 health zones, North Kivu CFR 68%, PHEIC reaffirmed after the 18 August Emergency Committee, Uganda and France completing 42-day monitoring on 27 August) all match E0019. The 963 new cases and 481 new deaths delta is quoted directly from DON617. The listing evidence supports the claim that no other DONs were published in the window. No calculation or method beyond these was requested. |
| ✅ | Measures: outcome Check Unique ID: llm_judge:rule:identify_sources | The delivered answer names WHO Disease Outbreak News as the source and includes the two inspectable item URLs, https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON617 and .../2026-DON616 (E0023, E0020). Both URLs appear verbatim in retrieval evidence (E0013 ItemDefaultUrl values and the successful fetches at E0016, E0019), so no URL was invented or guessed. |
| ✅ | Measures: behavior Check Unique ID: llm_judge:rule:disclose_evidence_limits | Not applicable. No triggering condition is established in the evidence. The named index page returned HTTP 200 rather than being inaccessible; its item list simply did not render in the fetched markup (E0004), and Hark fully recovered equivalent coverage from WHO's own DON listing endpoint on the same host, which returned 25 newest items back to January 2026 and therefore covers the entire 14-day window (E0013). The two in-window items were then retrieved in full (E0016, E0019), and no source disagreement appears anywhere in the record. With scope and time window fully covered by retrieved evidence, there was no specific gap or conflict that required disclosure. |
| ✅ | llm_judge:terminal | Hark fetched the user-named WHO Disease Outbreak News page (E0002/E0004), recovered from the empty JS-rendered listing by querying WHO's own DON OData endpoint (E0013), fetched the two items falling inside the 14-day window ending 2026-09-11 (E0016, E0019), and delivered a final, substantive answer with location, disease, case counts, and WHO risk assessment plus inspectable source links (E0020-E0025). The requested read-only output is complete; nothing remained open per the send_message result (E0021). |
| ✅ | llm_judge:behavior:B1 | Hark adaptively reformulated two failed WHO OData requests and succeeded on the third request, preserving use of the user-named source. Each reformulation materially advanced diagnosis of the HTTP 400 responses, and the final request successfully retrieved the ordered WHO DON listing. This was productive recovery, not repetition of an unchanged stalled strategy. |
Tool Timing
| Tool | Calls | Durations (s) | Total (s) | Avg (s) |
|---|
| send_message | 1 | 15.1 | 15.1 | 15.1 |
| web_fetch | 6 | 0.083, 0.2, 0.009, 0.6, 0.040, 0.042 | 1.0 | 0.2 |
Conversation
Use the web_fetch tool to answer the prompt.
What Disease Outbreak News items has https://www.who.int/emergencies/disease-outbreak-news published or updated in the past 14 days? Summarize location, disease, case counts, and assessed risk.
web_fetch completeddispatch toolu_017g8xqoofRX9TVafHbb5zgo
Input
{
"brief": "WHO DON API listing recent items",
"url": "https://www.who.int/api/news/diseaseoutbreaknews?sf_provider=%5BREDACTED%5D&sf_culture=%5BREDACTED%5D&%24orderby=%5BREDACTED%5D&%24select=%5BREDACTED%5D&%24top=%5BREDACTED%5D&%24count=%5BREDACTED%5D"
}
Tool Progress E0012
(no result)
Tool Result E0013
{
"content": "{\"@odata.context\":\"http://www.who.int/api/news/$metadata#[REDACTED]\",\"@odata.count\":3196,\"value\":[{\"ItemDefaultUrl\":\"/2026-DON617\",\"PublicationDateAndTime\":\"2026-09-10T08:16:08Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON616\",\"PublicationDateAndTime\":\"2026-08-28T15:28:00Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON615\",\"PublicationDateAndTime\":\"2026-08-14T15:38:29Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON614\",\"PublicationDateAndTime\":\"2026-08-01T10:13:28Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON613\",\"PublicationDateAndTime\":\"2026-07-17T16:13:00Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON612\",\"PublicationDateAndTime\":\"2026-07-03T15:13:57Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON611\",\"PublicationDateAndTime\":\"2026-07-02T18:00:00Z\",\"Title\":\"Hantavirus outbreak linked to cruise ship travel, Multi-locations\"},{\"ItemDefaultUrl\":\"/2026-DON609\",\"PublicationDateAndTime\":\"2026-06-25T18:00:00Z\",\"Title\":\"Nipah virus disease - India\"},{\"ItemDefaultUrl\":\"/2026-DON610\",\"PublicationDateAndTime\":\"2026-06-24T18:00:00Z\",\"Title\":\"Yellow fever - Global\"},{\"ItemDefaultUrl\":\"/2026-DON608\",\"PublicationDateAndTime\":\"2026-06-19T12:10:23Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON607\",\"PublicationDateAndTime\":\"2026-06-13T08:06:15Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON606\",\"PublicationDateAndTime\":\"2026-06-08T12:35:09Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON605\",\"PublicationDateAndTime\":\"2026-05-29T15:58:00Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON604\",\"PublicationDateAndTime\":\"2026-05-28T18:00:00Z\",\"Title\":\"Hantavirus outbreak linked to cruise ship travel, Multi-locations\"},{\"ItemDefaultUrl\":\"/2026-DON603\",\"PublicationDateAndTime\":\"2026-05-21T22:00:47Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus \\u2013 Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON602\",\"PublicationDateAndTime\":\"2026-05-16T22:00:00Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON601\",\"PublicationDateAndTime\":\"2026-05-13T18:00:00Z\",\"Title\":\"Hantavirus cluster linked to cruise ship travel, Multi-country\"},{\"ItemDefaultUrl\":\"/2026-DON600\",\"PublicationDateAndTime\":\"2026-05-08T18:00:00Z\",\"Title\":\"Hantavirus cluster linked to cruise ship travel, Multi-country\"},{\"ItemDefaultUrl\":\"/2026-DON599\",\"PublicationDateAndTime\":\"2026-05-04T18:00:00Z\",\"Title\":\"Hantavirus cluster linked to cruise ship travel, Multi-country\"},{\"ItemDefaultUrl\":\"/2026-DON598\",\"PublicationDateAndTime\":\"2026-04-23T12:58:07Z\",\"Title\":\"Measles - Bangladesh\"},{\"ItemDefaultUrl\":\"/2026-DON597\",\"PublicationDateAndTime\":\"2026-04-10T13:51:44Z\",\"Title\":\"Avian Influenza A(H9N2) - Italy\"},{\"ItemDefaultUrl\":\"/2026-DON596\",\"PublicationDateAndTime\":\"2026-03-13T19:00:00Z\",\"Title\":\"International food safety event: Infant formula and products containing arachidonic acid oil contaminated with cereulide toxin - Multi-country\"},{\"ItemDefaultUrl\":\"/2026-DON595\",\"PublicationDateAndTime\":\"2026-02-14T19:00:00Z\",\"Title\":\"Mpox: recombinant virus with genomic elements of clades Ib and IIb \\u2013 Global situation\"},{\"ItemDefaultUrl\":\"/2026-DON594\",\"PublicationDateAndTime\":\"2026-02-06T19:00:00Z\",\"Title\":\"Nipah virus infection - Bangladesh\"},{\"ItemDefaultUrl\":\"/2026-DON593\",\"PublicationDateAndTime\":\"2026-01-30T19:00:00Z\",\"Title\":\"Nipah virus disease - India\"}]}",
"content_length": 4147,
"content_type": "application/json",
"description": "",
"status_code": 200,
"success": true,
"title": "",
"url": "https://www.who.int/api/news/diseaseoutbreaknews"
}
Sub-agent trace (toolu_017g8xqoofRX9TVafHbb5zgo, 3 events)
tools_started web_fetch t=118099.411
Inner payload
{
"tool_name": "web_fetch",
"tool_input": {
"brief": "WHO DON API listing recent items",
"url": "https://www.who.int/api/news/diseaseoutbreaknews?sf_provider=%5BREDACTED%5D&sf_culture=%5BREDACTED%5D&%24orderby=%5BREDACTED%5D&%24select=%5BREDACTED%5D&%24top=%5BREDACTED%5D&%24count=%5BREDACTED%5D"
},
"dispatch_id": "toolu_017g8xqoofRX9TVafHbb5zgo",
"parent_dispatch_id": "",
"handle": "",
"panel_kind": "web_fetch"
}tools_progress web_fetch t=118099.412
Inner payload
{
"tool_name": "web_fetch",
"dispatch_id": "toolu_017g8xqoofRX9TVafHbb5zgo",
"status": "running",
"result": null,
"error": "",
"elapsed": null,
"fields": {
"progress": {
"message": "WHO DON API listing recent items",
"metadata": {
"browser_chain": false,
"url": "https://www.who.int/api/news/diseaseoutbreaknews?sf_provider=%5BREDACTED%5D&sf_culture=%5BREDACTED%5D&%24orderby=%5BREDACTED%5D&%24select=%5BREDACTED%5D&%24top=%5BREDACTED%5D&%24count=%5BREDACTED%5D"
}
},
"status": "running",
"updatedAt": 1789169481555
}
}tools_completed web_fetch t=118099.413
Inner payload
{
"tool_name": "web_fetch",
"dispatch_id": "toolu_017g8xqoofRX9TVafHbb5zgo",
"status": "completed",
"result": {
"content": "{\"@odata.context\":\"http://www.who.int/api/news/$metadata#[REDACTED]\",\"@odata.count\":3196,\"value\":[{\"ItemDefaultUrl\":\"/2026-DON617\",\"PublicationDateAndTime\":\"2026-09-10T08:16:08Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON616\",\"PublicationDateAndTime\":\"2026-08-28T15:28:00Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON615\",\"PublicationDateAndTime\":\"2026-08-14T15:38:29Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON614\",\"PublicationDateAndTime\":\"2026-08-01T10:13:28Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON613\",\"PublicationDateAndTime\":\"2026-07-17T16:13:00Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON612\",\"PublicationDateAndTime\":\"2026-07-03T15:13:57Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON611\",\"PublicationDateAndTime\":\"2026-07-02T18:00:00Z\",\"Title\":\"Hantavirus outbreak linked to cruise ship travel, Multi-locations\"},{\"ItemDefaultUrl\":\"/2026-DON609\",\"PublicationDateAndTime\":\"2026-06-25T18:00:00Z\",\"Title\":\"Nipah virus disease - India\"},{\"ItemDefaultUrl\":\"/2026-DON610\",\"PublicationDateAndTime\":\"2026-06-24T18:00:00Z\",\"Title\":\"Yellow fever - Global\"},{\"ItemDefaultUrl\":\"/2026-DON608\",\"PublicationDateAndTime\":\"2026-06-19T12:10:23Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON607\",\"PublicationDateAndTime\":\"2026-06-13T08:06:15Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON606\",\"PublicationDateAndTime\":\"2026-06-08T12:35:09Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON605\",\"PublicationDateAndTime\":\"2026-05-29T15:58:00Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON604\",\"PublicationDateAndTime\":\"2026-05-28T18:00:00Z\",\"Title\":\"Hantavirus outbreak linked to cruise ship travel, Multi-locations\"},{\"ItemDefaultUrl\":\"/2026-DON603\",\"PublicationDateAndTime\":\"2026-05-21T22:00:47Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus \\u2013 Democratic Republic of the Congo\"},{\"ItemDefaultUrl\":\"/2026-DON602\",\"PublicationDateAndTime\":\"2026-05-16T22:00:00Z\",\"Title\":\"Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda\"},{\"ItemDefaultUrl\":\"/2026-DON601\",\"PublicationDateAndTime\":\"2026-05-13T18:00:00Z\",\"Title\":\"Hantavirus cluster linked to cruise ship travel, Multi-country\"},{\"ItemDefaultUrl\":\"/2026-DON600\",\"PublicationDateAndTime\":\"2026-05-08T18:00:00Z\",\"Title\":\"Hantavirus cluster linked to cruise ship travel, Multi-country\"},{\"ItemDefaultUrl\":\"/2026-DON599\",\"PublicationDateAndTime\":\"2026-05-04T18:00:00Z\",\"Title\":\"Hantavirus cluster linked to cruise ship travel, Multi-country\"},{\"ItemDefaultUrl\":\"/2026-DON598\",\"PublicationDateAndTime\":\"2026-04-23T12:58:07Z\",\"Title\":\"Measles - Bangladesh\"},{\"ItemDefaultUrl\":\"/2026-DON597\",\"PublicationDateAndTime\":\"2026-04-10T13:51:44Z\",\"Title\":\"Avian Influenza A(H9N2) - Italy\"},{\"ItemDefaultUrl\":\"/2026-DON596\",\"PublicationDateAndTime\":\"2026-03-13T19:00:00Z\",\"Title\":\"International food safety event: Infant formula and products containing arachidonic acid oil contaminated with cereulide toxin - Multi-country\"},{\"ItemDefaultUrl\":\"/2026-DON595\",\"PublicationDateAndTime\":\"2026-02-14T19:00:00Z\",\"Title\":\"Mpox: recombinant virus with genomic elements of clades Ib and IIb \\u2013 Global situation\"},{\"ItemDefaultUrl\":\"/2026-DON594\",\"PublicationDateAndTime\":\"2026-02-06T19:00:00Z\",\"Title\":\"Nipah virus infection - Bangladesh\"},{\"ItemDefaultUrl\":\"/2026-DON593\",\"PublicationDateAndTime\":\"2026-01-30T19:00:00Z\",\"Title\":\"Nipah virus disease - India\"}]}",
"content_length": 4147,
"content_type": "application/json",
"description": "",
"status_code": 200,
"success": true,
"title": "",
"url": "https://www.who.int/api/news/diseaseoutbreaknews"
},
"error": "",
"elapsed": 0.556776062
}
web_fetch completeddispatch toolu_01UVcnzZdUf6jo4ftAbofnvy
Input
{
"brief": "DON617 details",
"url": "https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON617"
}
Tool Progress E0015
(no result)
Tool Result E0016
{
"content": "Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo [Skip to main content](#content)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [](https://www.who.int/) [Global](https://www.who.int/)\n - Regions\n\n\n\n\n\n\n\n  WHO Regional websites\n\n**\n\n\n\n\n\n\n - [![Africa]() Africa](https://www.afro.who.int/)\n - [![Americas]() Americas](https://www.paho.org/en)\n - [![South-East Asia]() South-East Asia](https://www.who.int/southeastasia)\n - [![Europe]() Europe](https://www.who.int/europe/)\n - [![Eastern Mediterranean]() Eastern Mediterranean](http://www.emro.who.int/index.html)\n - [![Western Pacific]() Western Pacific](https://www.who.int/westernpacific/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n **\n\n ** When autocomplete results are available use up and down arrows to review and enter to select.\n\n\n\n\n\n ** Select language Select language English العربية 中文 Français Русский Español Português **\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n [#XWVXNQGG](#XWVXNQGG)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [#XFEJCAUE](#XFEJCAUE)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [Home](/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [Health Topics](/mega-menu/health-topics)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n- [All topics](/health-topics/)\n- [A](/health-topics/#A)\n- [B](/health-topics/#B)\n- [C](/health-topics/#C)\n- [D](/health-topics/#D)\n- [E](/health-topics/#E)\n- [F](/health-topics/#F)\n- [G](/health-topics/#G)\n- [H](/health-topics/#H)\n- [I](/health-topics/#I)\n- [J](/health-topics/#J)\n- [K](/health-topics/#K)\n- [L](/health-topics/#L)\n- [M](/health-topics/#M)\n- [N](/health-topics/#N)\n- [O](/health-topics/#O)\n- [P](/health-topics/#P)\n- [Q](/health-topics/#Q)\n- [R](/health-topics/#R)\n- [S](/health-topics/#S)\n- [T](/health-topics/#T)\n- [U](/health-topics/#U)\n- [V](/health-topics/#V)\n- [W](/health-topics/#W)\n- [X](/health-topics/#X)\n- [Y](/health-topics/#Y)\n- [Z](/health-topics/#Z)\n\n\n\n\n\n\n\n\n\n\n\n\n - [Resources](/mega-menu/health-topics/resources)\n - [Fact sheets](/mega-menu/health-topics/resources/fact-sheets)\n - [Facts in pictures](/mega-menu/health-topics/resources/facts-in-pictures)\n - 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[Home](/)/\n - [Disease Outbreak News](/emergencies/disease-outbreak-news)/\n - [Item](/emergencies/disease-outbreak-news/item)/\n - Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## Disease Outbreak News\n\n\n\n# Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n 10 September 2026\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n### Situation at a glance\n\n\n\n Since the last Disease Outbreak News was published on 28 August 2026, the Bundibugyo virus outbreak in the Democratic Republic of the Congo has expanded to one additional health zone, Kayna, in North Kivu. This increase brings the total number of affected health zones to 61 across six out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, and Tshopo. As of 7 September 2026, the Democratic Republic of the Congo has reported 6757 confirmed cases, including 3267 deaths, resulting in a crude case fatality ratio (CFR) of 48.3%. The transmission dynamics remain variable across affected locations, with evidence of ongoing geographical expansion and sustained increase in cases in some health zones. The continuously high CFR highlights the seriousness of the disease and persistent challenges in timely case detection, access to early and adequate patient care, and effective interruption of transmission. Delayed detection of cases continues to increase the risk of further spread within households, communities, and healthcare settings.\n\n\n\n\n\n\n\n### Description of the situation\n\n\n\n\n\nSince the publication of the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616) on 28 August 2026, additional confirmed cases and deaths of Bundibugyo virus disease (BVD) have been reported only in the Democratic Republic of the Congo.\n\nAs of 7 September 2026, a cumulative total of 6778 confirmed cases has been reported: 6757 in the Democratic Republic of the Congo (including two cases diagnosed in the Democratic Republic of the Congo and subsequently treated in Germany), 20 cases in Uganda and one case in France. Overall, 3269 deaths have been reported, including two in Uganda. As of 7 September, at least 1611 patients have recovered, including 1590 in the Democratic Republic of the Congo, 18 in Uganda, two in Germany and one in France.\n\nThe sustained level of transmission in the Democratic Republic of the Congo continues to pose a risk of cross-border spread. Health screening and surveillance activities remain operational at airports, ports, and official land border crossings; however, travel through informal crossing routes persists and may facilitate virus exportation, importation, and subsequent transmission. In this context, strengthened cross-border coordination, together with ongoing surveillance and preparedness efforts, remains critical to limiting further regional spread and supporting an effective public health response.\n\n**Figure 1. Distribution of cumulative confirmed cases of Bundibugyo virus disease in the Democratic Republic of the Congo, as of 7 September **\n\n\n\n**Democratic Republic of the Congo **\n\nSince the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616) was published on 28 August 2026, an additional 963 confirmed cases, including 481 confirmed deaths, have been reported in the Democratic Republic of the Congo. While part of this increase may be attributable to strengthened surveillance activities, enhanced laboratory testing, improved diagnostic capacity, and reconciliation of previously unreported data, the continued growth in both cases and deaths also reflects sustained community transmission and significant geographic expansion of the outbreak. As of 7 September, the Democratic Republic of the Congo has reported a total of 6757 confirmed cases, including 3267 deaths (CFR 48.3%). A total of 1590 patients have recovered to date.\n\nConfirmed cases have been reported from 61 health zones (HZ) across six provinces, with 51 HZ from five provinces reporting at least one case in the last 21 days. Ituri remains the most affected province, with 28 of its 36 health zones reporting cases, followed by North Kivu (16/34), Tshopo (7/23), Haut-Uélé (6/13), Bas-Uélé (3/11), and South Kivu (1/34). No new cases have been reported from South Kivu province since 29 May 2026. Kayna HZ in North Kivu province is the most recently affected area. As of 7 September, 71 new confirmed cases had been reported in the preceding 24 hours from 17 health zones located in Ituri, North Kivu, and Haut-Uélé provinces.\n\nIturi continues to be the epicentre of the outbreak, accounting for 5406 confirmed cases since the start of the outbreak, including 1114 new confirmed cases reported in the previous 21 days, as of 7 September. North Kivu is the second most affected province, with a cumulative number of 1066 confirmed cases, including 453 reported in the last 21 days, as of 7 September. One of the highest CFR (65.4%) observed in this outbreak has been reported from North Kivu province; and investigations are ongoing to better understand the factors contributing to this elevated mortality rate.\n\nThe number of individuals requiring follow-up as contact has also risen considerably with the expansion of the outbreak. As of 7 September, 85.3% of identified contacts were successfully monitored during the previous 24 hours with 21 359 contacts seen out of 24 719 requiring follow up. The large volume of contacts under surveillance highlights the extent of potential exposure within affected communities and the substantial demands placed on response operations.\n\nThe outbreak continues to unfold within a complex humanitarian setting characterized by insecurity, armed conflict, and widespread population displacement. More than 26 million people are experiencing acute food insecurity, while approximately one million internally displaced persons reside in Ituri Province alone. Ongoing insecurity and displacement limit access to healthcare and essential services, constrain the ability of response teams to reach affected areas, and impede surveillance, case investigation and contact tracing activities. Overcrowding, limited water, sanitation and hygiene services, and restricted access to healthcare in mining communities, informal settlements and sites for internally displaced persons further undermine early case detection, infection prevention and control measures, and the provision of timely care. These conditions also reduce the effectiveness of response interventions and outreach efforts.\n\n**Figure 2: Number of confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo, by date of notification, as of 7 September 2026**\n\n\n\n**Figure 3: Number of deaths among confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo by date of notification, as of 7 September 2026. **\n\n\n\n\n\n\n\n\n\n\n\n### Epidemiology\n\n\n\n\n\nBundibugyo virus disease (BVD) is a severe Ebola disease caused by the Bundibugyo virus, one of the *Orthoebolavirus *species. It is a zoonotic disease, with fruit bats suspected to be the natural reservoir.\n\nHuman infection is thought to occur through close contact with the blood or secretions of infected wildlife, such as bats or non-human primates, and it subsequently spreads from person-to-person through direct contact with the blood, secretions, organs, or other bodily fluids of infected individuals or contaminated surfaces and materials. Transmission is particularly amplified in health-care settings when IPC measures are inadequate and during unsafe burial practices involving direct contact with deceased individuals.\n\nThe incubation period for BVD ranges from two to 21 days, and infected individuals are not infectious until symptom onset. Early symptoms such as fever, fatigue, muscle pain, headache, and sore throat are non-specific, which complicates clinical diagnosis and can delay detection. These symptoms then progress to gastrointestinal symptoms, organ dysfunction, and, in some cases, haemorrhagic manifestations.\n\nThe historical CFR from the past two BVD outbreaks, reported in Uganda and in the Democratic Republic of the Congo in 2007 and 2012, were 30% and 50%, respectively.\n\nDifferentiating BVD from other endemic febrile illnesses such as malaria is challenging without laboratory confirmation using polymerase chain reaction (PCR) or antigen- or antibody-based assays. Outbreak control relies on rapid case identification, isolation and care, contact tracing, safe burials and strong community engagement, as no approved vaccines or specific treatments currently exist for BVD.\n\nSince first detected in May 2026, this BVD outbreak has rapidly evolved into a large and geographically expanding epidemic in the Democratic Republic of the Congo, with sustained transmission, high mortality and an increasing risk of further international spread. The current outbreak is the second documented Bundibugyo virus disease outbreak in the country, after the 2012 outbreak, and the largest Ebola disease outbreak ever recorded in the Democratic Republic of the Congo irrespective of Ebola virus species. The population at greatest risk of exposure is concentrated in communities living in and moving through the health areas with active transmission. \n\n\n\n\n\n\n\n\n\n### Public health response\n\n\n\n\n\nFor detailed information about the ongoing public health response actions by the Ministry of Health, WHO and partners please refer to the latest situation reports published by the WHO Regional Office for Africa: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26)\n\nHealth authorities in the Democratic Republic of the Congo, in collaboration with WHO and partners, are continuing to implement and coordinate extensive public health measures, including disease surveillance, laboratory testing, infection prevention and control, clinical care, community engagement, research, logistics and support for response interventions and essential health services, engaging donors and mobilizing additional resources to address critical funding gaps and sustain response operations across affected and at-risk areas. A substantial scale-up is ongoing across all response pillars to get ahead of the outbreak. \n\n\n\n\n\n\n\n\n\n### WHO risk assessment\n\n\n\n\n\nOn 14 August 2026, WHO reassessed the risk of the outbreak of BVD, incorporating newly available information on the evolving situation. The risk for countries sharing land borders with the Democratic Republic of the Congo was separated from the risk for other countries in the African Region.\n\nThe risk in the Democratic Republic of the Congo was assessed as very high, the risk for countries sharing land borders with the Democratic Republic of the Congo was again assessed as high, and the risks for the rest of the African region and at the global level was again assessed as low.\n\nFor further information, please see [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4)****\n\n\n\n\n\n\n\n\n\n### WHO advice\n\n\n\n\n\nBased on the currently available information, WHO advises against any restriction of travel to, or trade with, affected countries. WHO continues to closely monitor and, where necessary, verify travel and trade measures in relation to this event.\n\nThe updated [Temporary Recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) issued to States Parties on 24 August 2026 underscore the importance of coordinated outbreak control, strengthened cross‑border collaboration, and sustained surveillance and preparedness to prevent further regional spread and ensure an effective public health response. Rapid recognition of cases, testing and optimized supportive care can reduce mortality, and improve community perceptions and acceptance of health care within the response.\n\nOn 7 August, the WHO Technical Advisory Group on candidate vaccine prioritization released a report regarding possible candidate vaccines for Bundibugyo virus disease. The members recommended that Ervebo, the only licensed Ebola vaccine (previously known as ebolavirus Zaire), be prioritized for inclusion in a randomized clinical trial in the context of the ongoing outbreak in the Democratic Republic of the Congo. Following a review of additional evidence on 19 August 2026, the WHO Strategic Advisory Group of Experts on Immunization (SAGE) concluded that available evidence remains insufficient to support the programmatic use of Ervebo for the prevention of BVD, and that its efficacy against BVD in humans remains unknown. WHO therefore recommends that Ervebo be used for BVD only within the context of a research protocol. Ervebo vaccination of healthcare and frontline workers is now underway. As of 6 September 2026, a total of 2007 people had been vaccinated across six health zones in three provinces: Tshopo, Bas-Uélé and Ituri.\n\nOn 2 July, a clinical trial to find effective treatments against BVD began patient enrollment on 2 July. The trial, known as the PARTNERS trial, is now open in five different clinical management facilities in Ituri province, and has enrolled over 300 people who are confirmed cases. \n\n\n\n\n\n\n\n\n\n### Further information\n\n\n\n\n\n**Regular Information products on the outbreak o****f Bundibugyo virus disease ******\n\n- **Daily update: **[Epidemiological update on BVD outbreak in Democratic Republic of the Congo](https://www.who.int/emergencies/alert-and-response)\n- **Published weekly: **[Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) | WHO| Regional Office for Africa\n- **Published biweekly:**[****Disease Outbreak News | All Hazards Public Health Events, Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo](https://www.who.int/emergencies/disease-outbreak-news)\n\n**Additional information**\n\n**Current outbreak: declarations and status**\n\n- [Africa CDC and WHO launch joint continental Ebola response plan](https://www.who.int/news/item/05-06-2026-africa-cdc-and-who-launch-joint-continental-ebola-response-plan)\n- [Bundibugyo Ebola virus | Continental preparedness and response plan: June-November 2026](https://www.afro.who.int/publications/bundibugyo-ebola-virus-continental-preparedness-and-response-plan-june-november-2026)\n- [Epidemic of Ebola Disease caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda determined a public health emergency of international concern](https://www.who.int/news/item/17-05-2026-epidemic-of-ebola-disease-in-the-democratic-republic-of-the-congo-and-uganda-determined-a-public-health-emergency-of-international-concern)\n- [The Ministry of Public Health, Hygiene and Social Welfare, DRC, officially declares the 17th Ebola Disease outbreak](https://administration.sante.gouv.cd/wp-content/uploads/2026/05/Declaration-de-la-17e-Epidemie-de-la-maladie-a-virus-Ebola-dans-les-zones-de-sante-de-Rwampara-Mongwalu-et-Bunia-dans-la-province-dIturi.pdf)\n- [WHO Democratic Republic of Congo confirms new Ebola outbreak](https://www.afro.who.int/countries/democratic-republic-of-congo/news/democratic-republic-congo-confirms-new-ebola-outbreak-who-scales-upsupport)\n- [Message by the WHO Director-General to the people of the Democratic Republic of the Congo](https://www.who.int/news/item/28-05-2026-message-by-the-who-director-general-to-the-people-of-the-democratic-republic-of-the-congo)\n- [At the frontline of trust: a day with Julienne Anoko WHO's Ebola Community Engagement Officer in DRC](https://www.afro.who.int/countries/democratic-republic-of-congo/news/frontline-trust-day-julienne-anoko-whos-ebola-community-engagement-officer-drc)\n- [Decentralized testing speeds up Ebola response in the Democratic Republic of the Congo](https://www.afro.who.int/countries/democratic-republic-of-congo/news/decentralized-testing-speeds-ebola-response-democratic-republic-congo)\n- [Uganda ends Ebola outbreak following completion of 42-day countdown | WHO | Regional Office for Afri…](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown)\n- [Second meeting of the IHR Emergency Committee on the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo – Temporary recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations)\n\n**WHO Rapid risk assessments**\n\n- [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4)\n\n**Epidemiological updates and situation reports**\n\n- [Weekly External Situation Report. EBOLA BUNDIBUGYO VIRUS DISEASE OUTBREAK Democratic Republic of the Congo | Uganda.](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26)\n- [Ebola Outbreak: Current Situation | Ebola | CDC](https://www.cdc.gov/ebola/situation-summary/index.html)\n- [Daily situation report, Ministry of Health, Democratic Republic of the Congo.](https://insp.cd/category/sitrep/)\n- [Press Statements - Ministry of Health - Uganda](https://health.go.ug/press-statements/)\n- [Ebola updates, Ministry of Health, Uganda](https://evd-daily.health.go.ug/)\n\n**Published Disease Outbreak News (current outbreak)**\n\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 16 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON602)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 21 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON603)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 29 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON605)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 8 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON606)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 13 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON607)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 19 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON608)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 3 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON612)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 17 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON613)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 1 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON614)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 14 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 28 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616)\n\n**Clinical management, IPC, and occupational safety**\n\n- [WHO guidelines for the clinical management of filovirus disease](https://www.who.int/publications/i/item/B09774)\n- [Infection prevention and control guideline for Ebola and Marburg disease. WHO.17 May 2026](https://www.who.int/publications/i/item/9789240111332)\n- [Infection prevention and control and water, sanitation and hygiene in health facilities during Ebola or Marburg disease outbreaks: rapid assessment tool, user guide.](https://www.who.int/publications/i/item/9789240107205)\n- [Assessment and management of health and care workers with possible occupational exposures to Orthoebolavirus or Orthomarburgvirus: implementation guidance](https://www.who.int/publications/i/item/9789240107328)\n- [Optimized Supportive Care for Ebola Virus Disease. Clinical management standard operating procedures. WHO. 2019](https://www.who.int/publications/i/item/9789241515894)\n- [Framework and toolkit for infection prevention and control in outbreak preparedness, readiness and response at the national level](https://www.who.int/publications/i/item/9789240032729)\n- [Diagnostic testing for Ebola disease and Marburg virus disease: interim guidance, 9 July 2026](https://iris.who.int/handle/10665/386711)\n- [Considerations for border health and points of entry for filovirus disease outbreaks](https://www.who.int/publications/m/item/considerations-for-border-health-and-points-of-entry-for-filovirus-disease-outbreaks)\n\n**Vaccines**\n\n- [Third meeting of the WHO Technical Advisory Group on candidate vaccine prioritization (TAG-CVP) for Bundibugyo virus disease outbreak response: meeting report, 31 July 2026](https://www.who.int/publications/i/item/B09865)\n- [WHO press release regarding a clinical trial to find effective treatments against Bundibugyo virus disease.](https://www.who.int/news/item/02-07-2026-patient-enrolment-begins-in-a-scientific-trial-to-identify-the-first-effective-treatments-for-bundibugyo-virus-disease) \n\n**Training**\n\n- [WHO Launches Online Training to Strengthen Filovirus Outbreak Response](https://www.who.int/news/item/26-03-2025-who-launches-online-training-to-strengthen-filovirus-outbreak-response)\n\n**Prior Bundibugyo virus disease events, DRC (2012)**\n\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 14 September 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_09_14-en)\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 26 October 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_10_26-en)\n\n**Background and reference**\n\n- [Ebola disease fact sheet](https://www.who.int/news-room/fact-sheets/detail/ebola-disease)\n- [Ebola vaccines](https://www.who.int/news-room/questions-and-answers/item/ebola-vaccines)\n\n**Citable reference:** World Health Organization (10 September 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. Available at: [https://www/who.int/emergencies/disease-outbreak.news.item/2026-DON617](https://www/who.int/emergencies/disease-outbreak.news.item/2026-DON617)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [Regions](/redirect-pages/footer/regions)\n - [Africa](/redirect-pages/footer/regions/africa)\n - [Americas](/redirect-pages/footer/regions/americas)\n - [Eastern Mediterranean](/redirect-pages/footer/regions/eastern-mediterranen)\n - [Europe](/redirect-pages/footer/regions/europe)\n - [South-East Asia](/redirect-pages/footer/regions/south-east-asia)\n - [Western Pacific](/redirect-pages/footer/regions/western-pacific)\n\n\n - [Policies](/redirect-pages/footer/who-policies)\n - [Cybersecurity](/redirect-pages/footer/who-policies/cybersecurity)\n - [Ethics](/redirect-pages/footer/who-policies/ethics)\n - [Information disclosure](/redirect-pages/footer/who-policies/information-disclosure)\n - [Permissions and licensing](/redirect-pages/footer/who-policies/permissions-and-licensing)\n - [Preventing sexual exploitation](/redirect-pages/footer/who-policies/preventing-sexual-exploitation)\n - [Terms of use](/redirect-pages/footer/who-policies/terms-of-use)\n\n\n - [About us](/redirect-pages/footer/about-us)\n - [Careers](/redirect-pages/footer/about-us/careers)\n - [Frequently asked questions](/redirect-pages/footer/about-us/frequently-asked-questions)\n - [Library](/redirect-pages/footer/about-us/library)\n - [Procurement](/redirect-pages/footer/about-us/procurement)\n - [Publications](/redirect-pages/footer/about-us/publications)\n\n\n\n\n\n\n\n\n\n\n\n\n - [Contact us](/about/contact-us)\n\n\n\n\n\n\n\n[Newsletters](/redirect-pages/footer/about-us/newsletters)\n\n\n\n\n\n\n\n[Report misconduct](/about/office-of-internal-oversight-services/integrity-hotline)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n[Privacy policy](/about/policies/privacy)\n\n\n\n\n\n\n\n\n\n\n\n[https://www.youtube.com/user/who?sub_confirmation=%5BREDACTED%5D [https://twitter.com/intent/follow?source=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D [https://www.facebook.com/WHO](https://www.facebook.com/WHO) [https://instagram.com/who](https://instagram.com/who) [https://www.linkedin.com/company/world-health-organization](https://www.linkedin.com/company/world-health-organization) [https://www.snapchat.com/add/who](https://www.snapchat.com/add/who) [https://www.tiktok.com/@who?lang=%5BREDACTED%5D\n\n\n\n\n\n\n\n © 2026\n\n\n\n[WHO](/about/policies/terms-of-use)",
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"content": "Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo [Skip to main content](#content)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [](https://www.who.int/) [Global](https://www.who.int/)\n - Regions\n\n\n\n\n\n\n\n  WHO Regional websites\n\n**\n\n\n\n\n\n\n - [![Africa]() Africa](https://www.afro.who.int/)\n - [![Americas]() Americas](https://www.paho.org/en)\n - [![South-East Asia]() South-East Asia](https://www.who.int/southeastasia)\n - [![Europe]() Europe](https://www.who.int/europe/)\n - [![Eastern Mediterranean]() Eastern Mediterranean](http://www.emro.who.int/index.html)\n - [![Western Pacific]() Western Pacific](https://www.who.int/westernpacific/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n **\n\n ** When autocomplete results are available use up and down arrows to review and enter to select.\n\n\n\n\n\n ** Select language Select language English العربية 中文 Français Русский Español Português **\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n [#XWVXNQGG](#XWVXNQGG)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [#XFEJCAUE](#XFEJCAUE)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - 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[Home](/)/\n - [Disease Outbreak News](/emergencies/disease-outbreak-news)/\n - [Item](/emergencies/disease-outbreak-news/item)/\n - Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## Disease Outbreak News\n\n\n\n# Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n 10 September 2026\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n### Situation at a glance\n\n\n\n Since the last Disease Outbreak News was published on 28 August 2026, the Bundibugyo virus outbreak in the Democratic Republic of the Congo has expanded to one additional health zone, Kayna, in North Kivu. This increase brings the total number of affected health zones to 61 across six out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, and Tshopo. As of 7 September 2026, the Democratic Republic of the Congo has reported 6757 confirmed cases, including 3267 deaths, resulting in a crude case fatality ratio (CFR) of 48.3%. The transmission dynamics remain variable across affected locations, with evidence of ongoing geographical expansion and sustained increase in cases in some health zones. The continuously high CFR highlights the seriousness of the disease and persistent challenges in timely case detection, access to early and adequate patient care, and effective interruption of transmission. Delayed detection of cases continues to increase the risk of further spread within households, communities, and healthcare settings.\n\n\n\n\n\n\n\n### Description of the situation\n\n\n\n\n\nSince the publication of the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616) on 28 August 2026, additional confirmed cases and deaths of Bundibugyo virus disease (BVD) have been reported only in the Democratic Republic of the Congo.\n\nAs of 7 September 2026, a cumulative total of 6778 confirmed cases has been reported: 6757 in the Democratic Republic of the Congo (including two cases diagnosed in the Democratic Republic of the Congo and subsequently treated in Germany), 20 cases in Uganda and one case in France. Overall, 3269 deaths have been reported, including two in Uganda. As of 7 September, at least 1611 patients have recovered, including 1590 in the Democratic Republic of the Congo, 18 in Uganda, two in Germany and one in France.\n\nThe sustained level of transmission in the Democratic Republic of the Congo continues to pose a risk of cross-border spread. Health screening and surveillance activities remain operational at airports, ports, and official land border crossings; however, travel through informal crossing routes persists and may facilitate virus exportation, importation, and subsequent transmission. In this context, strengthened cross-border coordination, together with ongoing surveillance and preparedness efforts, remains critical to limiting further regional spread and supporting an effective public health response.\n\n**Figure 1. Distribution of cumulative confirmed cases of Bundibugyo virus disease in the Democratic Republic of the Congo, as of 7 September **\n\n\n\n**Democratic Republic of the Congo **\n\nSince the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616) was published on 28 August 2026, an additional 963 confirmed cases, including 481 confirmed deaths, have been reported in the Democratic Republic of the Congo. While part of this increase may be attributable to strengthened surveillance activities, enhanced laboratory testing, improved diagnostic capacity, and reconciliation of previously unreported data, the continued growth in both cases and deaths also reflects sustained community transmission and significant geographic expansion of the outbreak. As of 7 September, the Democratic Republic of the Congo has reported a total of 6757 confirmed cases, including 3267 deaths (CFR 48.3%). A total of 1590 patients have recovered to date.\n\nConfirmed cases have been reported from 61 health zones (HZ) across six provinces, with 51 HZ from five provinces reporting at least one case in the last 21 days. Ituri remains the most affected province, with 28 of its 36 health zones reporting cases, followed by North Kivu (16/34), Tshopo (7/23), Haut-Uélé (6/13), Bas-Uélé (3/11), and South Kivu (1/34). No new cases have been reported from South Kivu province since 29 May 2026. Kayna HZ in North Kivu province is the most recently affected area. As of 7 September, 71 new confirmed cases had been reported in the preceding 24 hours from 17 health zones located in Ituri, North Kivu, and Haut-Uélé provinces.\n\nIturi continues to be the epicentre of the outbreak, accounting for 5406 confirmed cases since the start of the outbreak, including 1114 new confirmed cases reported in the previous 21 days, as of 7 September. North Kivu is the second most affected province, with a cumulative number of 1066 confirmed cases, including 453 reported in the last 21 days, as of 7 September. One of the highest CFR (65.4%) observed in this outbreak has been reported from North Kivu province; and investigations are ongoing to better understand the factors contributing to this elevated mortality rate.\n\nThe number of individuals requiring follow-up as contact has also risen considerably with the expansion of the outbreak. As of 7 September, 85.3% of identified contacts were successfully monitored during the previous 24 hours with 21 359 contacts seen out of 24 719 requiring follow up. The large volume of contacts under surveillance highlights the extent of potential exposure within affected communities and the substantial demands placed on response operations.\n\nThe outbreak continues to unfold within a complex humanitarian setting characterized by insecurity, armed conflict, and widespread population displacement. More than 26 million people are experiencing acute food insecurity, while approximately one million internally displaced persons reside in Ituri Province alone. Ongoing insecurity and displacement limit access to healthcare and essential services, constrain the ability of response teams to reach affected areas, and impede surveillance, case investigation and contact tracing activities. Overcrowding, limited water, sanitation and hygiene services, and restricted access to healthcare in mining communities, informal settlements and sites for internally displaced persons further undermine early case detection, infection prevention and control measures, and the provision of timely care. These conditions also reduce the effectiveness of response interventions and outreach efforts.\n\n**Figure 2: Number of confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo, by date of notification, as of 7 September 2026**\n\n\n\n**Figure 3: Number of deaths among confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo by date of notification, as of 7 September 2026. **\n\n\n\n\n\n\n\n\n\n\n\n### Epidemiology\n\n\n\n\n\nBundibugyo virus disease (BVD) is a severe Ebola disease caused by the Bundibugyo virus, one of the *Orthoebolavirus *species. It is a zoonotic disease, with fruit bats suspected to be the natural reservoir.\n\nHuman infection is thought to occur through close contact with the blood or secretions of infected wildlife, such as bats or non-human primates, and it subsequently spreads from person-to-person through direct contact with the blood, secretions, organs, or other bodily fluids of infected individuals or contaminated surfaces and materials. Transmission is particularly amplified in health-care settings when IPC measures are inadequate and during unsafe burial practices involving direct contact with deceased individuals.\n\nThe incubation period for BVD ranges from two to 21 days, and infected individuals are not infectious until symptom onset. Early symptoms such as fever, fatigue, muscle pain, headache, and sore throat are non-specific, which complicates clinical diagnosis and can delay detection. These symptoms then progress to gastrointestinal symptoms, organ dysfunction, and, in some cases, haemorrhagic manifestations.\n\nThe historical CFR from the past two BVD outbreaks, reported in Uganda and in the Democratic Republic of the Congo in 2007 and 2012, were 30% and 50%, respectively.\n\nDifferentiating BVD from other endemic febrile illnesses such as malaria is challenging without laboratory confirmation using polymerase chain reaction (PCR) or antigen- or antibody-based assays. Outbreak control relies on rapid case identification, isolation and care, contact tracing, safe burials and strong community engagement, as no approved vaccines or specific treatments currently exist for BVD.\n\nSince first detected in May 2026, this BVD outbreak has rapidly evolved into a large and geographically expanding epidemic in the Democratic Republic of the Congo, with sustained transmission, high mortality and an increasing risk of further international spread. The current outbreak is the second documented Bundibugyo virus disease outbreak in the country, after the 2012 outbreak, and the largest Ebola disease outbreak ever recorded in the Democratic Republic of the Congo irrespective of Ebola virus species. The population at greatest risk of exposure is concentrated in communities living in and moving through the health areas with active transmission. \n\n\n\n\n\n\n\n\n\n### Public health response\n\n\n\n\n\nFor detailed information about the ongoing public health response actions by the Ministry of Health, WHO and partners please refer to the latest situation reports published by the WHO Regional Office for Africa: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26)\n\nHealth authorities in the Democratic Republic of the Congo, in collaboration with WHO and partners, are continuing to implement and coordinate extensive public health measures, including disease surveillance, laboratory testing, infection prevention and control, clinical care, community engagement, research, logistics and support for response interventions and essential health services, engaging donors and mobilizing additional resources to address critical funding gaps and sustain response operations across affected and at-risk areas. A substantial scale-up is ongoing across all response pillars to get ahead of the outbreak. \n\n\n\n\n\n\n\n\n\n### WHO risk assessment\n\n\n\n\n\nOn 14 August 2026, WHO reassessed the risk of the outbreak of BVD, incorporating newly available information on the evolving situation. The risk for countries sharing land borders with the Democratic Republic of the Congo was separated from the risk for other countries in the African Region.\n\nThe risk in the Democratic Republic of the Congo was assessed as very high, the risk for countries sharing land borders with the Democratic Republic of the Congo was again assessed as high, and the risks for the rest of the African region and at the global level was again assessed as low.\n\nFor further information, please see [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4)****\n\n\n\n\n\n\n\n\n\n### WHO advice\n\n\n\n\n\nBased on the currently available information, WHO advises against any restriction of travel to, or trade with, affected countries. WHO continues to closely monitor and, where necessary, verify travel and trade measures in relation to this event.\n\nThe updated [Temporary Recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) issued to States Parties on 24 August 2026 underscore the importance of coordinated outbreak control, strengthened cross‑border collaboration, and sustained surveillance and preparedness to prevent further regional spread and ensure an effective public health response. Rapid recognition of cases, testing and optimized supportive care can reduce mortality, and improve community perceptions and acceptance of health care within the response.\n\nOn 7 August, the WHO Technical Advisory Group on candidate vaccine prioritization released a report regarding possible candidate vaccines for Bundibugyo virus disease. The members recommended that Ervebo, the only licensed Ebola vaccine (previously known as ebolavirus Zaire), be prioritized for inclusion in a randomized clinical trial in the context of the ongoing outbreak in the Democratic Republic of the Congo. Following a review of additional evidence on 19 August 2026, the WHO Strategic Advisory Group of Experts on Immunization (SAGE) concluded that available evidence remains insufficient to support the programmatic use of Ervebo for the prevention of BVD, and that its efficacy against BVD in humans remains unknown. WHO therefore recommends that Ervebo be used for BVD only within the context of a research protocol. Ervebo vaccination of healthcare and frontline workers is now underway. As of 6 September 2026, a total of 2007 people had been vaccinated across six health zones in three provinces: Tshopo, Bas-Uélé and Ituri.\n\nOn 2 July, a clinical trial to find effective treatments against BVD began patient enrollment on 2 July. The trial, known as the PARTNERS trial, is now open in five different clinical management facilities in Ituri province, and has enrolled over 300 people who are confirmed cases. \n\n\n\n\n\n\n\n\n\n### Further information\n\n\n\n\n\n**Regular Information products on the outbreak o****f Bundibugyo virus disease ******\n\n- **Daily update: **[Epidemiological update on BVD outbreak in Democratic Republic of the Congo](https://www.who.int/emergencies/alert-and-response)\n- **Published weekly: **[Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) | WHO| Regional Office for Africa\n- **Published biweekly:**[****Disease Outbreak News | All Hazards Public Health Events, Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo](https://www.who.int/emergencies/disease-outbreak-news)\n\n**Additional information**\n\n**Current outbreak: declarations and status**\n\n- [Africa CDC and WHO launch joint continental Ebola response plan](https://www.who.int/news/item/05-06-2026-africa-cdc-and-who-launch-joint-continental-ebola-response-plan)\n- [Bundibugyo Ebola virus | Continental preparedness and response plan: June-November 2026](https://www.afro.who.int/publications/bundibugyo-ebola-virus-continental-preparedness-and-response-plan-june-november-2026)\n- [Epidemic of Ebola Disease caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda determined a public health emergency of international concern](https://www.who.int/news/item/17-05-2026-epidemic-of-ebola-disease-in-the-democratic-republic-of-the-congo-and-uganda-determined-a-public-health-emergency-of-international-concern)\n- [The Ministry of Public Health, Hygiene and Social Welfare, DRC, officially declares the 17th Ebola Disease outbreak](https://administration.sante.gouv.cd/wp-content/uploads/2026/05/Declaration-de-la-17e-Epidemie-de-la-maladie-a-virus-Ebola-dans-les-zones-de-sante-de-Rwampara-Mongwalu-et-Bunia-dans-la-province-dIturi.pdf)\n- [WHO Democratic Republic of Congo confirms new Ebola outbreak](https://www.afro.who.int/countries/democratic-republic-of-congo/news/democratic-republic-congo-confirms-new-ebola-outbreak-who-scales-upsupport)\n- [Message by the WHO Director-General to the people of the Democratic Republic of the Congo](https://www.who.int/news/item/28-05-2026-message-by-the-who-director-general-to-the-people-of-the-democratic-republic-of-the-congo)\n- [At the frontline of trust: a day with Julienne Anoko WHO's Ebola Community Engagement Officer in DRC](https://www.afro.who.int/countries/democratic-republic-of-congo/news/frontline-trust-day-julienne-anoko-whos-ebola-community-engagement-officer-drc)\n- [Decentralized testing speeds up Ebola response in the Democratic Republic of the Congo](https://www.afro.who.int/countries/democratic-republic-of-congo/news/decentralized-testing-speeds-ebola-response-democratic-republic-congo)\n- [Uganda ends Ebola outbreak following completion of 42-day countdown | WHO | Regional Office for Afri…](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown)\n- [Second meeting of the IHR Emergency Committee on the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo – Temporary recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations)\n\n**WHO Rapid risk assessments**\n\n- [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4)\n\n**Epidemiological updates and situation reports**\n\n- [Weekly External Situation Report. EBOLA BUNDIBUGYO VIRUS DISEASE OUTBREAK Democratic Republic of the Congo | Uganda.](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26)\n- [Ebola Outbreak: Current Situation | Ebola | CDC](https://www.cdc.gov/ebola/situation-summary/index.html)\n- [Daily situation report, Ministry of Health, Democratic Republic of the Congo.](https://insp.cd/category/sitrep/)\n- [Press Statements - Ministry of Health - Uganda](https://health.go.ug/press-statements/)\n- [Ebola updates, Ministry of Health, Uganda](https://evd-daily.health.go.ug/)\n\n**Published Disease Outbreak News (current outbreak)**\n\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 16 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON602)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 21 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON603)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 29 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON605)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 8 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON606)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 13 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON607)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 19 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON608)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 3 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON612)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 17 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON613)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 1 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON614)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 14 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 28 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616)\n\n**Clinical management, IPC, and occupational safety**\n\n- [WHO guidelines for the clinical management of filovirus disease](https://www.who.int/publications/i/item/B09774)\n- [Infection prevention and control guideline for Ebola and Marburg disease. WHO.17 May 2026](https://www.who.int/publications/i/item/9789240111332)\n- [Infection prevention and control and water, sanitation and hygiene in health facilities during Ebola or Marburg disease outbreaks: rapid assessment tool, user guide.](https://www.who.int/publications/i/item/9789240107205)\n- [Assessment and management of health and care workers with possible occupational exposures to Orthoebolavirus or Orthomarburgvirus: implementation guidance](https://www.who.int/publications/i/item/9789240107328)\n- [Optimized Supportive Care for Ebola Virus Disease. Clinical management standard operating procedures. WHO. 2019](https://www.who.int/publications/i/item/9789241515894)\n- [Framework and toolkit for infection prevention and control in outbreak preparedness, readiness and response at the national level](https://www.who.int/publications/i/item/9789240032729)\n- [Diagnostic testing for Ebola disease and Marburg virus disease: interim guidance, 9 July 2026](https://iris.who.int/handle/10665/386711)\n- [Considerations for border health and points of entry for filovirus disease outbreaks](https://www.who.int/publications/m/item/considerations-for-border-health-and-points-of-entry-for-filovirus-disease-outbreaks)\n\n**Vaccines**\n\n- [Third meeting of the WHO Technical Advisory Group on candidate vaccine prioritization (TAG-CVP) for Bundibugyo virus disease outbreak response: meeting report, 31 July 2026](https://www.who.int/publications/i/item/B09865)\n- [WHO press release regarding a clinical trial to find effective treatments against Bundibugyo virus disease.](https://www.who.int/news/item/02-07-2026-patient-enrolment-begins-in-a-scientific-trial-to-identify-the-first-effective-treatments-for-bundibugyo-virus-disease) \n\n**Training**\n\n- [WHO Launches Online Training to Strengthen Filovirus Outbreak Response](https://www.who.int/news/item/26-03-2025-who-launches-online-training-to-strengthen-filovirus-outbreak-response)\n\n**Prior Bundibugyo virus disease events, DRC (2012)**\n\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 14 September 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_09_14-en)\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 26 October 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_10_26-en)\n\n**Background and reference**\n\n- [Ebola disease fact sheet](https://www.who.int/news-room/fact-sheets/detail/ebola-disease)\n- [Ebola vaccines](https://www.who.int/news-room/questions-and-answers/item/ebola-vaccines)\n\n**Citable reference:** World Health Organization (10 September 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. Available at: [https://www/who.int/emergencies/disease-outbreak.news.item/2026-DON617](https://www/who.int/emergencies/disease-outbreak.news.item/2026-DON617)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [Regions](/redirect-pages/footer/regions)\n - [Africa](/redirect-pages/footer/regions/africa)\n - [Americas](/redirect-pages/footer/regions/americas)\n - [Eastern Mediterranean](/redirect-pages/footer/regions/eastern-mediterranen)\n - [Europe](/redirect-pages/footer/regions/europe)\n - [South-East Asia](/redirect-pages/footer/regions/south-east-asia)\n - [Western Pacific](/redirect-pages/footer/regions/western-pacific)\n\n\n - [Policies](/redirect-pages/footer/who-policies)\n - [Cybersecurity](/redirect-pages/footer/who-policies/cybersecurity)\n - [Ethics](/redirect-pages/footer/who-policies/ethics)\n - [Information disclosure](/redirect-pages/footer/who-policies/information-disclosure)\n - [Permissions and licensing](/redirect-pages/footer/who-policies/permissions-and-licensing)\n - [Preventing sexual exploitation](/redirect-pages/footer/who-policies/preventing-sexual-exploitation)\n - [Terms of use](/redirect-pages/footer/who-policies/terms-of-use)\n\n\n - [About us](/redirect-pages/footer/about-us)\n - [Careers](/redirect-pages/footer/about-us/careers)\n - [Frequently asked questions](/redirect-pages/footer/about-us/frequently-asked-questions)\n - [Library](/redirect-pages/footer/about-us/library)\n - [Procurement](/redirect-pages/footer/about-us/procurement)\n - [Publications](/redirect-pages/footer/about-us/publications)\n\n\n\n\n\n\n\n\n\n\n\n\n - [Contact us](/about/contact-us)\n\n\n\n\n\n\n\n[Newsletters](/redirect-pages/footer/about-us/newsletters)\n\n\n\n\n\n\n\n[Report misconduct](/about/office-of-internal-oversight-services/integrity-hotline)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n[Privacy policy](/about/policies/privacy)\n\n\n\n\n\n\n\n\n\n\n\n[https://www.youtube.com/user/who?sub_confirmation=%5BREDACTED%5D [https://twitter.com/intent/follow?source=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D [https://www.facebook.com/WHO](https://www.facebook.com/WHO) [https://instagram.com/who](https://instagram.com/who) [https://www.linkedin.com/company/world-health-organization](https://www.linkedin.com/company/world-health-organization) [https://www.snapchat.com/add/who](https://www.snapchat.com/add/who) [https://www.tiktok.com/@who?lang=%5BREDACTED%5D\n\n\n\n\n\n\n\n © 2026\n\n\n\n[WHO](/about/policies/terms-of-use)",
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[Home](/)/\n - [Disease Outbreak News](/emergencies/disease-outbreak-news)/\n - [Item](/emergencies/disease-outbreak-news/item)/\n - Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## Disease Outbreak News\n\n\n\n# Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n 28 August 2026\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n### Situation at a glance\n\n\n\n Since the last Disease Outbreak News was published on 14 August 2026, the outbreak has spread from 54 to 60 health zones. The number of affected provinces stands at six out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, and Tshopo. Six additional health zones reported cases since the last update - Ganga and Viadana health zones in Bas-Uélé province, Biena, Manguredjipa, and Mutwanga in North Kivu, and Tshopo health zone in Tshopo province. As of 26 August 2026, a total of 5794 confirmed cases, including 2786 deaths, have been reported, corresponding to a crude case fatality ratio (CFR) of 48.1%. These figures demonstrate a substantial increase in the scale and geographic extent of the outbreak over the past three months. The crude case fatality ratio of 48% underscores the severity of the disease and ongoing challenges related to timely case detection, access to and quality of clinical care, and effective interruption of viral transmission. Delays in recognizing cases increase the likelihood of onward transmission within households, communities and healthcare facilities. The outbreak remains a public health emergency of international concern, following the advice of Emergency Committee meeting convened on 18 August.\n\n\n\n\n\n\n\n### Description of the situation\n\n\n\n\n\nSince the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) was published on 14 August 2026, additional confirmed cases and deaths of BVD have been reported only in the Democratic Republic of the Congo. \n\nCumulatively as of 26 August 2026, 5815 confirmed cases have been reported: 5794 in the Democratic Republic of the Congo (including two cases diagnosed in the Democratic Republic of the Congo and subsequently treated in Germany), 20 in Uganda and one in France. A total of 2788 deaths have been reported, including two in Uganda. As of 26 August, at least 1314 patients have recovered, including 1293 in the Democratic Republic of the Congo, 18 in Uganda, two in Germany and one in France. \n\nAs of 27 August, the 42-day enhanced monitoring period, as per international guidance, has been completed in both France and [Uganda](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown). \n\nThe continuing intensity of transmission in the Democratic Republic of the Congo means that the risk of further exportation across international borders remains. Entry and exit health screening and surveillance measures are in place at airports, ports and official land border crossings; however, movement through informal border crossing routes may occur, presenting an ongoing risk of virus exportation, importation and onward transmission. Therefore, cross‑border collaboration, and sustained surveillance and preparedness are essential to prevent further regional spread and ensure an effective public health response. \n\nOn 27 August, vaccination of health care workers using the Ervebo vaccine was initiated in the Democratic Republic of the Congo in some areas, including in Kisangani, Tshopo province. Although Ervebo is a safe vaccine, and effective against Ebola virus disease, it is not known whether it provides protection against the Bundibugyo virus in humans. Thus, starting a clinical trial of the vaccine, alongside this wider use, is key to provide important new evidence and inform future use of the vaccine. \n\nThe second IHR Emergency Committee meeting regarding the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo took place on 18 August. Following the advice of the Committee, the Director-General agreed that the ongoing outbreak remains a Public Health Emergency of International Concern, and issued updated temporary recommendations to countries. \n\n**Figure 1. Distribution of cumulative confirmed cases of Bundibugyo virus disease in the Democratic Republic of the Congo, as of 26 August** \n\n\n\n**Democratic Republic of the Congo **\n\nSince 14 August 2026 when the last [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) was published, an additional 1129 confirmed cases, including 602 confirmed deaths, have been reported in the Democratic Republic of the Congo. Although part of this increase likely reflects expanded surveillance, enhanced laboratory testing, improved diagnostic capacity, and periodic data backlog reconciliation, the sustained rise in number of cases and deaths are the result of continued transmission and substantial outbreak expansion. As of 26 August 2026, a total of 5794 confirmed cases, including 2786 deaths (CFR 48.1%), have been reported in the Democratic Republic of the Congo. To date, 1293 patients have recovered. \n\nCases have been reported from 60 health zones (HZ) across six provinces. Ituri has 28 health zones affected out of 36, followed by North Kivu (15/34), Haut-Uélé (6/13), Tshopo (7/23), South Kivu (1/34) and Bas Uélé (3/11). The most recently affected province, Bas-Uélé, started reporting cases since 12 August. The most recently affected health zones are Biena and Manguredjipa in North Kivu province. As of 26 August, of the 60 affected health zones, 81 new confirmed cases were reported in the last 24 hours from 19 health zones in Ituri, North Kivu, Haut-Uélé, and Tshopo provinces. Ituri remains the epicentre of the outbreak, with 4802 confirmed cases reported since the start of the outbreak, including 52 new confirmed cases reported in the last 24 hours, as of 26 August. Nord-Kivu is the second most affected province, with a cumulative number of 775 confirmed cases, including 22 reported in the last 24 hours, as of 26 August. The highest CFR (68%) in this outbreak has been reported from North Kivu province; the reasons for this high CFR are under investigation. \n\nThe number of individuals requiring contact monitoring has also increased substantially as the outbreak has expanded. As of 26 August, the proportion of contacts followed up in the last 24 hours is at 82.3% (22 091 seen out of 26 850 to follow up). The large number of contacts reflects the scale of potential exposure within affected communities. \n\nThe outbreak is unfolding in a conflict-affected humanitarian context marked by insecurity, armed violence, and large-scale displacement. More than 26 million people face acute food insecurity, and an estimated one million internally displaced people live in Ituri Province alone. Insecurity and displacement disrupt access to health care and essential services, restrict access for response teams, and impede surveillance, case investigation and contact follow-up. Overcrowding, limited water, sanitation and hygiene services, and restricted access to healthcare in mining communities, informal settlements and sites for internally displaced people further hinder early detection, infection prevention, and appropriate care. These conditions also make it harder to implement response measures consistently and to reach affected populations. \n\n**Figure 2: Number of confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo, by date of notification, as of 26 August 2026**\n\n\n\n**Figure 3: Number of deaths among confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo by date of notification, as of 26 August 2026**\n\n, including suspected cases among travellers and health-care workers and reports circulating in public sources, were subsequently ruled out through investigation and laboratory testing. The remaining six were confirmed as Ebola events. \n\n\n\n\n\n\n\n\n\n### Epidemiology\n\n\n\n\n\nBundibugyo virus disease (BVD) is a severe Ebola disease caused by the Bundibugyo virus, one of the *Orthoebolavirus* species. It is a zoonotic disease, with fruit bats suspected to be the natural reservoir. \n\nHuman infection is thought to occur through close contact with the blood or secretions of infected wildlife, such as bats or non-human primates, and it subsequently spreads from person-to-person through direct contact with the blood, secretions, organs, or other bodily fluids of infected individuals or contaminated surfaces and materials. Transmission is particularly amplified in health-care settings when IPC measures are inadequate and during unsafe burial practices involving direct contact with deceased individuals. \n\nThe incubation period for BVD ranges from two to 21 days, and infected individuals are not infectious until symptom onset. Early symptoms such as fever, fatigue, muscle pain, headache, and sore throat are non-specific, which complicates clinical diagnosis and can delay detection. These symptoms then progress to gastrointestinal symptoms, organ dysfunction, and, in some cases, haemorrhagic manifestations. \n\nCFRs in the past two BVD outbreaks, reported in Uganda and in the Democratic Republic of the Congo in 2007 and 2012, were 30% and 50%, respectively. \n\nDifferentiating BVD from other endemic febrile illnesses such as malaria is challenging without laboratory confirmation using PCR or antigen- or antibody-based assays. Outbreak control relies on rapid case identification, isolation and care, contact tracing, safe burials and strong community engagement, as no approved vaccines or specific treatments currently exist for BVD. \n\nSince first detected in May 2026, this BVD outbreak has rapidly evolved into a large and geographically expanding epidemic in the Democratic Republic of the Congo, with sustained transmission, high mortality and an increasing risk of further international spread. The current outbreak is the second documented Bundibugyo virus disease outbreak in the country, after the 2012 outbreak, and the largest Ebola disease outbreak ever recorded in the Democratic Republic of the Congo irrespective of Ebola virus species. The population at greatest risk of exposure is concentrated in communities living in and moving through areas with active transmission. \n\n\n\n\n\n\n\n\n\n### Public health response\n\n\n\n\n\nFor detailed information about the ongoing public health response actions by the Ministry of Health, WHO and partners please refer to the latest situation reports published by the WHO Regional Office for Africa: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) \n\nHealth authorities in the Democratic Republic of the Congo, in collaboration with WHO and partners, are continuing to implement and coordinate extensive public health measures, including disease surveillance, laboratory testing, infection prevention and control, clinical care, community engagement, research, logistics and support for response interventions and essential health services, engaging donors and mobilizing additional resources to address critical funding gaps and sustain response operations across affected and at-risk areas. A substantial scale-up is ongoing across all response pillars to get ahead of the outbreak. \n\n\n\n\n\n\n\n\n\n### WHO risk assessment\n\n\n\n\n\nOn 14 August 2026, WHO reassessed the risk of the outbreak of BVD to incorporate newly available information. The risk for countries sharing land borders with the Democratic Republic of the Congo was separated from the risk for other countries in the African Region. \n\nThe risk in the Democratic Republic of the Congo was assessed as very high due to ongoing transmission and the continued expansion of the outbreak into new health zones, increasing the potential for further national and regional spread. The main considerations supporting this assessment include the substantial increase in the number of cases and considerable geographic extension of the outbreak since the previous risk assessment, and potential further increase in CFR as additional deaths are investigated and outcomes are established. In addition, reported transmission among healthcare workers, ongoing conflict and insecurity, laboratory capacity constraints, and absence of licensed vaccine or specific antiviral treatment were also considered as factors maintaining the very high risk. \n\nThe risk for countries sharing land borders with the Democratic Republic of the Congo was again assessed as high due to sustained population mobility linked to cross-border trade and mining activities, variation in capacities and experience of BVD response, and variable levels of readiness. Uganda, the Central African Republic and South Sudan are of particular concern for importation given their proximity, high population mobility and connectivity with areas of the Democratic Republic of the Congo currently experiencing intense transmission. For the Central African Republic and South Sudan, these risks are further compounded by high humanitarian needs, population displacement, insecurity and underlying limitations in health-system capacity. \n\nThe risk for the rest of the African region and at the global level was again assessed as low. \n\nFor further information, please see [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4) \n\n\n\n\n\n\n\n\n\n### WHO advice\n\n\n\n\n\nBased on the currently available information, WHO advises against any restriction of travel to, or trade with, affected countries. WHO continues to closely monitor and, where necessary, verify travel and trade measures in relation to this event. \n\nThe updated [Temporary Recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) issued to States Parties on 24 August 2026 underscore the importance of coordinated outbreak control, strengthened cross‑border collaboration, and sustained surveillance and preparedness to prevent further regional spread and ensure an effective public health response. Rapid recognition of cases, testing and optimized supportive care can reduce mortality, and improve community perceptions and acceptance of health care within the response. \n\nOn 7 August, the WHO Technical Advisory Group on candidate vaccine prioritization released a report regarding possible candidate vaccines for Bundibugyo virus disease. The members recommended that Ervebo, the only licensed Ebola vaccine (previously known as ebolavirus Zaire), be prioritized for inclusion in a randomized clinical trial in the context of the ongoing outbreak in the Democratic Republic of the Congo. \n\nIn addition, WHO is sponsoring a clinical trial to find effective treatments against BVD. The trial began enrollment on 2 July. The trial, known as the PARTNERS trial, is now open in three different clinical management facilities in Ituri province and has enrolled over 250 people who are confirmed cases. \n\n\n\n\n\n\n\n\n\n### Further information\n\n\n\n\n\n**Regular Information products on the outbreak of Bundibugyo virus disease **\n\nDaily update: [Epidemiological update on BVD outbreak in Democratic Republic of the Congo](https://www.who.int/emergencies/alert-and-response) \n\nPublished weekly: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) | WHO| Regional Office for Africa \n\nPublished biweekly:[Disease Outbreak News | All Hazards Public Health Events, Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo](https://www.who.int/emergencies/disease-outbreak-news) \n\n**Additional information **\n\nCurrent outbreak: declarations and status \n\n- [Africa CDC and WHO launch joint continental Ebola response plan](https://www.who.int/news/item/05-06-2026-africa-cdc-and-who-launch-joint-continental-ebola-response-plan) \n- [Bundibugyo Ebola virus | Continental preparedness and response plan: June-November 2026](https://www.afro.who.int/publications/bundibugyo-ebola-virus-continental-preparedness-and-response-plan-june-november-2026) \n- [Epidemic of Ebola Disease caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda determined a public health emergency of international concern](https://www.who.int/news/item/17-05-2026-epidemic-of-ebola-disease-in-the-democratic-republic-of-the-congo-and-uganda-determined-a-public-health-emergency-of-international-concern) \n- [The Ministry of Public Health, Hygiene and Social Welfare, DRC, officially declares the 17th Ebola Disease outbreak](https://administration.sante.gouv.cd/wp-content/uploads/2026/05/Declaration-de-la-17e-Epidemie-de-la-maladie-a-virus-Ebola-dans-les-zones-de-sante-de-Rwampara-Mongwalu-et-Bunia-dans-la-province-dIturi.pdf) \n- [WHO Democratic Republic of Congo confirms new Ebola outbreak](https://www.afro.who.int/countries/democratic-republic-of-congo/news/democratic-republic-congo-confirms-new-ebola-outbreak-who-scales-upsupport) \n- [Message by the WHO Director-General to the people of the Democratic Republic of the Congo](https://www.who.int/news/item/28-05-2026-message-by-the-who-director-general-to-the-people-of-the-democratic-republic-of-the-congo) \n- [At the frontline of trust: a day with Julienne Anoko WHO's Ebola Community Engagement Officer in DRC](https://www.afro.who.int/countries/democratic-republic-of-congo/news/frontline-trust-day-julienne-anoko-whos-ebola-community-engagement-officer-drc) \n- [Decentralized testing speeds up Ebola response in the Democratic Republic of the Congo](https://www.afro.who.int/countries/democratic-republic-of-congo/news/decentralized-testing-speeds-ebola-response-democratic-republic-congo) \n- [Uganda ends Ebola outbreak following completion of 42-day countdown | WHO | Regional Office for Afri…](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown) \n- [Second meeting of the IHR Emergency Committee on the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo – Temporary recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) \n\nWHO Rapid risk assessments \n\n- [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4) \n\nEpidemiological updates and situation reports \n\n- [Weekly External Situation Report. EBOLA BUNDIBUGYO VIRUS DISEASE OUTBREAK Democratic Republic of the Congo | Uganda.](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) \n- [Ebola Outbreak: Current Situation | Ebola | CDC](https://www.cdc.gov/ebola/situation-summary/index.html) \n- [Daily situation report, Ministry of Health, Democratic Republic of the Congo.](https://insp.cd/category/sitrep/) \n- [Press Statements - Ministry of Health - Uganda](https://health.go.ug/press-statements/) \n- [Ebola updates, Ministry of Health, Uganda](https://evd-daily.health.go.ug/) \n\nPublished Disease Outbreak News (current outbreak) \n\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 16 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON602) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 21 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON603) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 29 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON605) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 8 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON606) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 13 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON607) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 19 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON608) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 3 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON612) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 17 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON613) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 1 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON614)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 14 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) \n\nClinical management, IPC, and occupational safety \n\n- [WHO guidelines for the clinical management of filovirus disease](https://www.who.int/publications/i/item/B09774) \n- [Infection prevention and control guideline for Ebola and Marburg disease. WHO.17 May 2026](https://www.who.int/publications/i/item/9789240111332) \n- [Infection prevention and control and water, sanitation and hygiene in health facilities during Ebola or Marburg disease outbreaks: rapid assessment tool, user guide.](https://www.who.int/publications/i/item/9789240107205) \n- [Assessment and management of health and care workers with possible occupational exposures to Orthoebolavirus or Orthomarburgvirus: implementation guidance](https://www.who.int/publications/i/item/9789240107328) \n- [Optimized Supportive Care for Ebola Virus Disease. Clinical management standard operating procedures. WHO. 2019](https://www.who.int/publications/i/item/9789241515894) \n- [Framework and toolkit for infection prevention and control in outbreak preparedness, readiness and response at the national level](https://www.who.int/publications/i/item/9789240032729) \n- [Diagnostic testing for Ebola disease and Marburg virus disease: interim guidance, 9 July 2026](https://iris.who.int/handle/10665/386711) \n- [Considerations for border health and points of entry for filovirus disease outbreaks](https://www.who.int/publications/m/item/considerations-for-border-health-and-points-of-entry-for-filovirus-disease-outbreaks) \n\n Vaccines \n\n- [Third meeting of the WHO Technical Advisory Group on candidate vaccine prioritization (TAG-CVP) for Bundibugyo virus disease outbreak response: meeting report, 31 July 2026](https://www.who.int/publications/i/item/B09865) \n- [WHO press release regarding a clinical trial to find effective treatments against Bundibugyo virus disease.](https://www.who.int/news/item/02-07-2026-patient-enrolment-begins-in-a-scientific-trial-to-identify-the-first-effective-treatments-for-bundibugyo-virus-disease) \n\nTraining \n\n[WHO Launches Online Training to Strengthen Filovirus Outbreak Response](https://www.who.int/news/item/26-03-2025-who-launches-online-training-to-strengthen-filovirus-outbreak-response) \n\nPrior Bundibugyo virus disease events, DRC (2012) \n\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 14 September 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_09_14-en) \n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 26 October 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_10_26-en) \n\nBackground and reference \n\n[Ebola disease fact sheet](https://www.who.int/news-room/fact-sheets/detail/ebola-disease) \n\n[Ebola vaccines](https://www.who.int/news-room/questions-and-answers/item/ebola-vaccines) \n\nCitable reference: World Health Organization (31 July 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo and Uganda. Available at \n\n[https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614) \n\nWorld Health Organization (1 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo and Uganda. Available at \n\n[https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614) \n\nWorld Health Organization (14 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. Available at: [https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON615](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON615) \n\nWorld Health Organization (28 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. Available at: [https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON616](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON616) \n\n \n\n \n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [Regions](/redirect-pages/footer/regions)\n - [Africa](/redirect-pages/footer/regions/africa)\n - [Americas](/redirect-pages/footer/regions/americas)\n - [Eastern Mediterranean](/redirect-pages/footer/regions/eastern-mediterranen)\n - [Europe](/redirect-pages/footer/regions/europe)\n - [South-East Asia](/redirect-pages/footer/regions/south-east-asia)\n - [Western Pacific](/redirect-pages/footer/regions/western-pacific)\n\n\n - [Policies](/redirect-pages/footer/who-policies)\n - [Cybersecurity](/redirect-pages/footer/who-policies/cybersecurity)\n - [Ethics](/redirect-pages/footer/who-policies/ethics)\n - [Information disclosure](/redirect-pages/footer/who-policies/information-disclosure)\n - [Permissions and licensing](/redirect-pages/footer/who-policies/permissions-and-licensing)\n - [Preventing sexual exploitation](/redirect-pages/footer/who-policies/preventing-sexual-exploitation)\n - [Terms of use](/redirect-pages/footer/who-policies/terms-of-use)\n\n\n - [About us](/redirect-pages/footer/about-us)\n - [Careers](/redirect-pages/footer/about-us/careers)\n - [Frequently asked questions](/redirect-pages/footer/about-us/frequently-asked-questions)\n - [Library](/redirect-pages/footer/about-us/library)\n - [Procurement](/redirect-pages/footer/about-us/procurement)\n - [Publications](/redirect-pages/footer/about-us/publications)\n\n\n\n\n\n\n\n\n\n\n\n\n - [Contact us](/about/contact-us)\n\n\n\n\n\n\n\n[Newsletters](/redirect-pages/footer/about-us/newsletters)\n\n\n\n\n\n\n\n[Report misconduct](/about/office-of-internal-oversight-services/integrity-hotline)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n[Privacy policy](/about/policies/privacy)\n\n\n\n\n\n\n\n\n\n\n\n[https://www.youtube.com/user/who?sub_confirmation=%5BREDACTED%5D [https://twitter.com/intent/follow?source=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D [https://www.facebook.com/WHO](https://www.facebook.com/WHO) [https://instagram.com/who](https://instagram.com/who) [https://www.linkedin.com/company/world-health-organization](https://www.linkedin.com/company/world-health-organization) [https://www.snapchat.com/add/who](https://www.snapchat.com/add/who) [https://www.tiktok.com/@who?lang=%5BREDACTED%5D\n\n\n\n\n\n\n\n © 2026\n\n\n\n[WHO](/about/policies/terms-of-use)",
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"content": "Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo [Skip to main content](#content)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [](https://www.who.int/) [Global](https://www.who.int/)\n - Regions\n\n\n\n\n\n\n\n  WHO Regional websites\n\n**\n\n\n\n\n\n\n - [![Africa]() Africa](https://www.afro.who.int/)\n - [![Americas]() Americas](https://www.paho.org/en)\n - [![South-East Asia]() South-East Asia](https://www.who.int/southeastasia)\n - [![Europe]() Europe](https://www.who.int/europe/)\n - [![Eastern Mediterranean]() Eastern Mediterranean](http://www.emro.who.int/index.html)\n - [![Western Pacific]() Western Pacific](https://www.who.int/westernpacific/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n **\n\n ** When autocomplete results are available use up and down arrows to review and enter to select.\n\n\n\n\n\n ** Select language Select language English العربية 中文 Français Русский Español Português **\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n [#XWVXNQGG](#XWVXNQGG)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [#XFEJCAUE](#XFEJCAUE)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - 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[Home](/)/\n - [Disease Outbreak News](/emergencies/disease-outbreak-news)/\n - [Item](/emergencies/disease-outbreak-news/item)/\n - Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## Disease Outbreak News\n\n\n\n# Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n 28 August 2026\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n### Situation at a glance\n\n\n\n Since the last Disease Outbreak News was published on 14 August 2026, the outbreak has spread from 54 to 60 health zones. The number of affected provinces stands at six out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, and Tshopo. Six additional health zones reported cases since the last update - Ganga and Viadana health zones in Bas-Uélé province, Biena, Manguredjipa, and Mutwanga in North Kivu, and Tshopo health zone in Tshopo province. As of 26 August 2026, a total of 5794 confirmed cases, including 2786 deaths, have been reported, corresponding to a crude case fatality ratio (CFR) of 48.1%. These figures demonstrate a substantial increase in the scale and geographic extent of the outbreak over the past three months. The crude case fatality ratio of 48% underscores the severity of the disease and ongoing challenges related to timely case detection, access to and quality of clinical care, and effective interruption of viral transmission. Delays in recognizing cases increase the likelihood of onward transmission within households, communities and healthcare facilities. The outbreak remains a public health emergency of international concern, following the advice of Emergency Committee meeting convened on 18 August.\n\n\n\n\n\n\n\n### Description of the situation\n\n\n\n\n\nSince the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) was published on 14 August 2026, additional confirmed cases and deaths of BVD have been reported only in the Democratic Republic of the Congo. \n\nCumulatively as of 26 August 2026, 5815 confirmed cases have been reported: 5794 in the Democratic Republic of the Congo (including two cases diagnosed in the Democratic Republic of the Congo and subsequently treated in Germany), 20 in Uganda and one in France. A total of 2788 deaths have been reported, including two in Uganda. As of 26 August, at least 1314 patients have recovered, including 1293 in the Democratic Republic of the Congo, 18 in Uganda, two in Germany and one in France. \n\nAs of 27 August, the 42-day enhanced monitoring period, as per international guidance, has been completed in both France and [Uganda](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown). \n\nThe continuing intensity of transmission in the Democratic Republic of the Congo means that the risk of further exportation across international borders remains. Entry and exit health screening and surveillance measures are in place at airports, ports and official land border crossings; however, movement through informal border crossing routes may occur, presenting an ongoing risk of virus exportation, importation and onward transmission. Therefore, cross‑border collaboration, and sustained surveillance and preparedness are essential to prevent further regional spread and ensure an effective public health response. \n\nOn 27 August, vaccination of health care workers using the Ervebo vaccine was initiated in the Democratic Republic of the Congo in some areas, including in Kisangani, Tshopo province. Although Ervebo is a safe vaccine, and effective against Ebola virus disease, it is not known whether it provides protection against the Bundibugyo virus in humans. Thus, starting a clinical trial of the vaccine, alongside this wider use, is key to provide important new evidence and inform future use of the vaccine. \n\nThe second IHR Emergency Committee meeting regarding the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo took place on 18 August. Following the advice of the Committee, the Director-General agreed that the ongoing outbreak remains a Public Health Emergency of International Concern, and issued updated temporary recommendations to countries. \n\n**Figure 1. Distribution of cumulative confirmed cases of Bundibugyo virus disease in the Democratic Republic of the Congo, as of 26 August** \n\n\n\n**Democratic Republic of the Congo **\n\nSince 14 August 2026 when the last [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) was published, an additional 1129 confirmed cases, including 602 confirmed deaths, have been reported in the Democratic Republic of the Congo. Although part of this increase likely reflects expanded surveillance, enhanced laboratory testing, improved diagnostic capacity, and periodic data backlog reconciliation, the sustained rise in number of cases and deaths are the result of continued transmission and substantial outbreak expansion. As of 26 August 2026, a total of 5794 confirmed cases, including 2786 deaths (CFR 48.1%), have been reported in the Democratic Republic of the Congo. To date, 1293 patients have recovered. \n\nCases have been reported from 60 health zones (HZ) across six provinces. Ituri has 28 health zones affected out of 36, followed by North Kivu (15/34), Haut-Uélé (6/13), Tshopo (7/23), South Kivu (1/34) and Bas Uélé (3/11). The most recently affected province, Bas-Uélé, started reporting cases since 12 August. The most recently affected health zones are Biena and Manguredjipa in North Kivu province. As of 26 August, of the 60 affected health zones, 81 new confirmed cases were reported in the last 24 hours from 19 health zones in Ituri, North Kivu, Haut-Uélé, and Tshopo provinces. Ituri remains the epicentre of the outbreak, with 4802 confirmed cases reported since the start of the outbreak, including 52 new confirmed cases reported in the last 24 hours, as of 26 August. Nord-Kivu is the second most affected province, with a cumulative number of 775 confirmed cases, including 22 reported in the last 24 hours, as of 26 August. The highest CFR (68%) in this outbreak has been reported from North Kivu province; the reasons for this high CFR are under investigation. \n\nThe number of individuals requiring contact monitoring has also increased substantially as the outbreak has expanded. As of 26 August, the proportion of contacts followed up in the last 24 hours is at 82.3% (22 091 seen out of 26 850 to follow up). The large number of contacts reflects the scale of potential exposure within affected communities. \n\nThe outbreak is unfolding in a conflict-affected humanitarian context marked by insecurity, armed violence, and large-scale displacement. More than 26 million people face acute food insecurity, and an estimated one million internally displaced people live in Ituri Province alone. Insecurity and displacement disrupt access to health care and essential services, restrict access for response teams, and impede surveillance, case investigation and contact follow-up. Overcrowding, limited water, sanitation and hygiene services, and restricted access to healthcare in mining communities, informal settlements and sites for internally displaced people further hinder early detection, infection prevention, and appropriate care. These conditions also make it harder to implement response measures consistently and to reach affected populations. \n\n**Figure 2: Number of confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo, by date of notification, as of 26 August 2026**\n\n\n\n**Figure 3: Number of deaths among confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo by date of notification, as of 26 August 2026**\n\n, including suspected cases among travellers and health-care workers and reports circulating in public sources, were subsequently ruled out through investigation and laboratory testing. The remaining six were confirmed as Ebola events. \n\n\n\n\n\n\n\n\n\n### Epidemiology\n\n\n\n\n\nBundibugyo virus disease (BVD) is a severe Ebola disease caused by the Bundibugyo virus, one of the *Orthoebolavirus* species. It is a zoonotic disease, with fruit bats suspected to be the natural reservoir. \n\nHuman infection is thought to occur through close contact with the blood or secretions of infected wildlife, such as bats or non-human primates, and it subsequently spreads from person-to-person through direct contact with the blood, secretions, organs, or other bodily fluids of infected individuals or contaminated surfaces and materials. Transmission is particularly amplified in health-care settings when IPC measures are inadequate and during unsafe burial practices involving direct contact with deceased individuals. \n\nThe incubation period for BVD ranges from two to 21 days, and infected individuals are not infectious until symptom onset. Early symptoms such as fever, fatigue, muscle pain, headache, and sore throat are non-specific, which complicates clinical diagnosis and can delay detection. These symptoms then progress to gastrointestinal symptoms, organ dysfunction, and, in some cases, haemorrhagic manifestations. \n\nCFRs in the past two BVD outbreaks, reported in Uganda and in the Democratic Republic of the Congo in 2007 and 2012, were 30% and 50%, respectively. \n\nDifferentiating BVD from other endemic febrile illnesses such as malaria is challenging without laboratory confirmation using PCR or antigen- or antibody-based assays. Outbreak control relies on rapid case identification, isolation and care, contact tracing, safe burials and strong community engagement, as no approved vaccines or specific treatments currently exist for BVD. \n\nSince first detected in May 2026, this BVD outbreak has rapidly evolved into a large and geographically expanding epidemic in the Democratic Republic of the Congo, with sustained transmission, high mortality and an increasing risk of further international spread. The current outbreak is the second documented Bundibugyo virus disease outbreak in the country, after the 2012 outbreak, and the largest Ebola disease outbreak ever recorded in the Democratic Republic of the Congo irrespective of Ebola virus species. The population at greatest risk of exposure is concentrated in communities living in and moving through areas with active transmission. \n\n\n\n\n\n\n\n\n\n### Public health response\n\n\n\n\n\nFor detailed information about the ongoing public health response actions by the Ministry of Health, WHO and partners please refer to the latest situation reports published by the WHO Regional Office for Africa: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) \n\nHealth authorities in the Democratic Republic of the Congo, in collaboration with WHO and partners, are continuing to implement and coordinate extensive public health measures, including disease surveillance, laboratory testing, infection prevention and control, clinical care, community engagement, research, logistics and support for response interventions and essential health services, engaging donors and mobilizing additional resources to address critical funding gaps and sustain response operations across affected and at-risk areas. A substantial scale-up is ongoing across all response pillars to get ahead of the outbreak. \n\n\n\n\n\n\n\n\n\n### WHO risk assessment\n\n\n\n\n\nOn 14 August 2026, WHO reassessed the risk of the outbreak of BVD to incorporate newly available information. The risk for countries sharing land borders with the Democratic Republic of the Congo was separated from the risk for other countries in the African Region. \n\nThe risk in the Democratic Republic of the Congo was assessed as very high due to ongoing transmission and the continued expansion of the outbreak into new health zones, increasing the potential for further national and regional spread. The main considerations supporting this assessment include the substantial increase in the number of cases and considerable geographic extension of the outbreak since the previous risk assessment, and potential further increase in CFR as additional deaths are investigated and outcomes are established. In addition, reported transmission among healthcare workers, ongoing conflict and insecurity, laboratory capacity constraints, and absence of licensed vaccine or specific antiviral treatment were also considered as factors maintaining the very high risk. \n\nThe risk for countries sharing land borders with the Democratic Republic of the Congo was again assessed as high due to sustained population mobility linked to cross-border trade and mining activities, variation in capacities and experience of BVD response, and variable levels of readiness. Uganda, the Central African Republic and South Sudan are of particular concern for importation given their proximity, high population mobility and connectivity with areas of the Democratic Republic of the Congo currently experiencing intense transmission. For the Central African Republic and South Sudan, these risks are further compounded by high humanitarian needs, population displacement, insecurity and underlying limitations in health-system capacity. \n\nThe risk for the rest of the African region and at the global level was again assessed as low. \n\nFor further information, please see [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4) \n\n\n\n\n\n\n\n\n\n### WHO advice\n\n\n\n\n\nBased on the currently available information, WHO advises against any restriction of travel to, or trade with, affected countries. WHO continues to closely monitor and, where necessary, verify travel and trade measures in relation to this event. \n\nThe updated [Temporary Recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) issued to States Parties on 24 August 2026 underscore the importance of coordinated outbreak control, strengthened cross‑border collaboration, and sustained surveillance and preparedness to prevent further regional spread and ensure an effective public health response. Rapid recognition of cases, testing and optimized supportive care can reduce mortality, and improve community perceptions and acceptance of health care within the response. \n\nOn 7 August, the WHO Technical Advisory Group on candidate vaccine prioritization released a report regarding possible candidate vaccines for Bundibugyo virus disease. The members recommended that Ervebo, the only licensed Ebola vaccine (previously known as ebolavirus Zaire), be prioritized for inclusion in a randomized clinical trial in the context of the ongoing outbreak in the Democratic Republic of the Congo. \n\nIn addition, WHO is sponsoring a clinical trial to find effective treatments against BVD. The trial began enrollment on 2 July. The trial, known as the PARTNERS trial, is now open in three different clinical management facilities in Ituri province and has enrolled over 250 people who are confirmed cases. \n\n\n\n\n\n\n\n\n\n### Further information\n\n\n\n\n\n**Regular Information products on the outbreak of Bundibugyo virus disease **\n\nDaily update: [Epidemiological update on BVD outbreak in Democratic Republic of the Congo](https://www.who.int/emergencies/alert-and-response) \n\nPublished weekly: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) | WHO| Regional Office for Africa \n\nPublished biweekly:[Disease Outbreak News | All Hazards Public Health Events, Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo](https://www.who.int/emergencies/disease-outbreak-news) \n\n**Additional information **\n\nCurrent outbreak: declarations and status \n\n- [Africa CDC and WHO launch joint continental Ebola response plan](https://www.who.int/news/item/05-06-2026-africa-cdc-and-who-launch-joint-continental-ebola-response-plan) \n- [Bundibugyo Ebola virus | Continental preparedness and response plan: June-November 2026](https://www.afro.who.int/publications/bundibugyo-ebola-virus-continental-preparedness-and-response-plan-june-november-2026) \n- [Epidemic of Ebola Disease caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda determined a public health emergency of international concern](https://www.who.int/news/item/17-05-2026-epidemic-of-ebola-disease-in-the-democratic-republic-of-the-congo-and-uganda-determined-a-public-health-emergency-of-international-concern) \n- [The Ministry of Public Health, Hygiene and Social Welfare, DRC, officially declares the 17th Ebola Disease outbreak](https://administration.sante.gouv.cd/wp-content/uploads/2026/05/Declaration-de-la-17e-Epidemie-de-la-maladie-a-virus-Ebola-dans-les-zones-de-sante-de-Rwampara-Mongwalu-et-Bunia-dans-la-province-dIturi.pdf) \n- [WHO Democratic Republic of Congo confirms new Ebola outbreak](https://www.afro.who.int/countries/democratic-republic-of-congo/news/democratic-republic-congo-confirms-new-ebola-outbreak-who-scales-upsupport) \n- [Message by the WHO Director-General to the people of the Democratic Republic of the Congo](https://www.who.int/news/item/28-05-2026-message-by-the-who-director-general-to-the-people-of-the-democratic-republic-of-the-congo) \n- [At the frontline of trust: a day with Julienne Anoko WHO's Ebola Community Engagement Officer in DRC](https://www.afro.who.int/countries/democratic-republic-of-congo/news/frontline-trust-day-julienne-anoko-whos-ebola-community-engagement-officer-drc) \n- [Decentralized testing speeds up Ebola response in the Democratic Republic of the Congo](https://www.afro.who.int/countries/democratic-republic-of-congo/news/decentralized-testing-speeds-ebola-response-democratic-republic-congo) \n- [Uganda ends Ebola outbreak following completion of 42-day countdown | WHO | Regional Office for Afri…](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown) \n- [Second meeting of the IHR Emergency Committee on the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo – Temporary recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) \n\nWHO Rapid risk assessments \n\n- [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4) \n\nEpidemiological updates and situation reports \n\n- [Weekly External Situation Report. EBOLA BUNDIBUGYO VIRUS DISEASE OUTBREAK Democratic Republic of the Congo | Uganda.](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) \n- [Ebola Outbreak: Current Situation | Ebola | CDC](https://www.cdc.gov/ebola/situation-summary/index.html) \n- [Daily situation report, Ministry of Health, Democratic Republic of the Congo.](https://insp.cd/category/sitrep/) \n- [Press Statements - Ministry of Health - Uganda](https://health.go.ug/press-statements/) \n- [Ebola updates, Ministry of Health, Uganda](https://evd-daily.health.go.ug/) \n\nPublished Disease Outbreak News (current outbreak) \n\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 16 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON602) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 21 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON603) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 29 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON605) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 8 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON606) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 13 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON607) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 19 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON608) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 3 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON612) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 17 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON613) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 1 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON614)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 14 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) \n\nClinical management, IPC, and occupational safety \n\n- [WHO guidelines for the clinical management of filovirus disease](https://www.who.int/publications/i/item/B09774) \n- [Infection prevention and control guideline for Ebola and Marburg disease. WHO.17 May 2026](https://www.who.int/publications/i/item/9789240111332) \n- [Infection prevention and control and water, sanitation and hygiene in health facilities during Ebola or Marburg disease outbreaks: rapid assessment tool, user guide.](https://www.who.int/publications/i/item/9789240107205) \n- [Assessment and management of health and care workers with possible occupational exposures to Orthoebolavirus or Orthomarburgvirus: implementation guidance](https://www.who.int/publications/i/item/9789240107328) \n- [Optimized Supportive Care for Ebola Virus Disease. Clinical management standard operating procedures. WHO. 2019](https://www.who.int/publications/i/item/9789241515894) \n- [Framework and toolkit for infection prevention and control in outbreak preparedness, readiness and response at the national level](https://www.who.int/publications/i/item/9789240032729) \n- [Diagnostic testing for Ebola disease and Marburg virus disease: interim guidance, 9 July 2026](https://iris.who.int/handle/10665/386711) \n- [Considerations for border health and points of entry for filovirus disease outbreaks](https://www.who.int/publications/m/item/considerations-for-border-health-and-points-of-entry-for-filovirus-disease-outbreaks) \n\n Vaccines \n\n- [Third meeting of the WHO Technical Advisory Group on candidate vaccine prioritization (TAG-CVP) for Bundibugyo virus disease outbreak response: meeting report, 31 July 2026](https://www.who.int/publications/i/item/B09865) \n- [WHO press release regarding a clinical trial to find effective treatments against Bundibugyo virus disease.](https://www.who.int/news/item/02-07-2026-patient-enrolment-begins-in-a-scientific-trial-to-identify-the-first-effective-treatments-for-bundibugyo-virus-disease) \n\nTraining \n\n[WHO Launches Online Training to Strengthen Filovirus Outbreak Response](https://www.who.int/news/item/26-03-2025-who-launches-online-training-to-strengthen-filovirus-outbreak-response) \n\nPrior Bundibugyo virus disease events, DRC (2012) \n\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 14 September 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_09_14-en) \n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 26 October 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_10_26-en) \n\nBackground and reference \n\n[Ebola disease fact sheet](https://www.who.int/news-room/fact-sheets/detail/ebola-disease) \n\n[Ebola vaccines](https://www.who.int/news-room/questions-and-answers/item/ebola-vaccines) \n\nCitable reference: World Health Organization (31 July 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo and Uganda. Available at \n\n[https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614) \n\nWorld Health Organization (1 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo and Uganda. Available at \n\n[https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614) \n\nWorld Health Organization (14 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. Available at: [https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON615](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON615) \n\nWorld Health Organization (28 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. Available at: [https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON616](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON616) \n\n \n\n \n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [Regions](/redirect-pages/footer/regions)\n - [Africa](/redirect-pages/footer/regions/africa)\n - [Americas](/redirect-pages/footer/regions/americas)\n - [Eastern Mediterranean](/redirect-pages/footer/regions/eastern-mediterranen)\n - [Europe](/redirect-pages/footer/regions/europe)\n - [South-East Asia](/redirect-pages/footer/regions/south-east-asia)\n - [Western Pacific](/redirect-pages/footer/regions/western-pacific)\n\n\n - [Policies](/redirect-pages/footer/who-policies)\n - [Cybersecurity](/redirect-pages/footer/who-policies/cybersecurity)\n - [Ethics](/redirect-pages/footer/who-policies/ethics)\n - [Information disclosure](/redirect-pages/footer/who-policies/information-disclosure)\n - [Permissions and licensing](/redirect-pages/footer/who-policies/permissions-and-licensing)\n - [Preventing sexual exploitation](/redirect-pages/footer/who-policies/preventing-sexual-exploitation)\n - [Terms of use](/redirect-pages/footer/who-policies/terms-of-use)\n\n\n - [About us](/redirect-pages/footer/about-us)\n - [Careers](/redirect-pages/footer/about-us/careers)\n - [Frequently asked questions](/redirect-pages/footer/about-us/frequently-asked-questions)\n - [Library](/redirect-pages/footer/about-us/library)\n - [Procurement](/redirect-pages/footer/about-us/procurement)\n - [Publications](/redirect-pages/footer/about-us/publications)\n\n\n\n\n\n\n\n\n\n\n\n\n - [Contact us](/about/contact-us)\n\n\n\n\n\n\n\n[Newsletters](/redirect-pages/footer/about-us/newsletters)\n\n\n\n\n\n\n\n[Report misconduct](/about/office-of-internal-oversight-services/integrity-hotline)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n[Privacy policy](/about/policies/privacy)\n\n\n\n\n\n\n\n\n\n\n\n[https://www.youtube.com/user/who?sub_confirmation=%5BREDACTED%5D [https://twitter.com/intent/follow?source=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D [https://www.facebook.com/WHO](https://www.facebook.com/WHO) [https://instagram.com/who](https://instagram.com/who) [https://www.linkedin.com/company/world-health-organization](https://www.linkedin.com/company/world-health-organization) [https://www.snapchat.com/add/who](https://www.snapchat.com/add/who) [https://www.tiktok.com/@who?lang=%5BREDACTED%5D\n\n\n\n\n\n\n\n © 2026\n\n\n\n[WHO](/about/policies/terms-of-use)",
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Two reports on Ebola (Bundibugyo) in the DRC, same outbreak, 12 days apart.
https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON617
https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616
Ebola (Bundibugyo) outbreak progression · WHO Disease Outbreak News
| Report | Location | Cases (DRC) | Deaths (DRC) | CFR | Global Cases | Risk |
|---|
| Sept 10 | 61 zones, 6 provinces; Ituri epicentre (NK new: Kayna) | 6757 confirmed | 3267 | 48.3% | 6778 (20 Uganda, 1 France) | Very high (DRC); high (bordering); low (rest) |
| Aug 28 | 60 zones, 6 provinces | 5794 confirmed | 2786 | 48.1% | 5815 | Very high (DRC); high (bordering); low (rest) |
Markdown source
### Ebola (Bundibugyo) outbreak progression · WHO Disease Outbreak News
| Report | Location | Cases (DRC) | Deaths (DRC) | CFR | Global Cases | Risk |
|--------|----------|------------|-------------|-----|--------------|------|
| Sept 10 | 61 zones, 6 provinces; Ituri epicentre (NK new: Kayna) | 6757 confirmed | 3267 | 48.3% | 6778 (20 Uganda, 1 France) | Very high (DRC); high (bordering); low (rest) |
| Aug 28 | 60 zones, 6 provinces | 5794 confirmed | 2786 | 48.1% | 5815 | Very high (DRC); high (bordering); low (rest) |
963 new cases and 481 new deaths in 12 days. North Kivu hit hardest (CFR 65.4% as of Sept 10). No travel or trade restrictions advised; Uganda and France cleared their monitoring periods by late August.
Normalized evidence
The redacted, numbered record a structured judge grades. Check rows above link to the IDs they cite.
Use the web_fetch tool to answer the prompt.
What Disease Outbreak News items has https://www.who.int/emergencies/disease-outbreak-news published or updated in the past 14 days? Summarize location, disease, case counts, and assessed risk.
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{"dispatch_id": "toolu_01FeygjKNi572GuYccVe7XVU", "elapsed": 0.083177079, "error": "", "result": {"content": "Disease Outbreak News [Skip to main content](#content)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [](https://www.who.int/) [Global](https://www.who.int/)\n - Regions\n\n\n\n\n\n\n\n  WHO Regional websites\n\n**\n\n\n\n\n\n\n - [![Africa]() Africa](https://www.afro.who.int/)\n - [![Americas]() Americas](https://www.paho.org/en)\n - [![South-East Asia]() South-East Asia](https://www.who.int/southeastasia)\n - [![Europe]() Europe](https://www.who.int/europe/)\n - [![Eastern Mediterranean]() Eastern Mediterranean](http://www.emro.who.int/index.html)\n - [![Western Pacific]() Western Pacific](https://www.who.int/westernpacific/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n **\n\n ** When autocomplete results are available use up and down arrows to review and enter to select.\n\n\n\n\n\n ** Select language Select language English العربية 中文 Français Русский Español Português **\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n [#XWVXNQGG](#XWVXNQGG)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [#XFEJCAUE](#XFEJCAUE)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - 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The DON reports fulfill this requirement.\n\nThe events reported in the DON is not an exhaustive list of events that WHO is responding to globally but include those that meet the criteria for information to be made available to the public.\n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n 2027 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990\n\n\n\n 2027 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nUnfortunately we don't have any results matching your criteria.\n\n\n\nYour predefined filter criteria are invalid.\n\n\n\n\n\n \n\n\n\n\n\n\n\n\n\n\n\n## Related emergency content\n\n\n\n\n\n\n\n[Situation reports](/emergencies/situation-reports)\n\n[https://www.who.int/csr/don/archive/year/en/](https://www.who.int/csr/don/archive/year/en/)\n\n\n\n\n\n\n\n## Get the latest DONs\n\n\n\n\n\n\n\n[Subscribe](https://confirmsubscription.com/h/d/6830A1D405297A6F)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## The criteria for Disease Outbreak News\n\n\n\n\n\n\n\n\n\n\n\nDisease Outbreak News (DONs) are published relating to confirmed or potential public health events, of:\n\n- Unknown cause with a significant or potential international health concern that may affect international travel or trade;\n- A known cause which has demonstrated the ability to cause serious public health impact and spread internationally;\n- High public concern which may lead to disruption of required public health interventions, or could disrupt international travel or trade.\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [Regions](/redirect-pages/footer/regions)\n - [Africa](/redirect-pages/footer/regions/africa)\n - [Americas](/redirect-pages/footer/regions/americas)\n - [Eastern Mediterranean](/redirect-pages/footer/regions/eastern-mediterranen)\n - [Europe](/redirect-pages/footer/regions/europe)\n - [South-East Asia](/redirect-pages/footer/regions/south-east-asia)\n - [Western Pacific](/redirect-pages/footer/regions/western-pacific)\n\n\n - [Policies](/redirect-pages/footer/who-policies)\n - [Cybersecurity](/redirect-pages/footer/who-policies/cybersecurity)\n - [Ethics](/redirect-pages/footer/who-policies/ethics)\n - [Information disclosure](/redirect-pages/footer/who-policies/information-disclosure)\n - [Permissions and licensing](/redirect-pages/footer/who-policies/permissions-and-licensing)\n - [Preventing sexual exploitation](/redirect-pages/footer/who-policies/preventing-sexual-exploitation)\n - [Terms of use](/redirect-pages/footer/who-policies/terms-of-use)\n\n\n - [About us](/redirect-pages/footer/about-us)\n - [Careers](/redirect-pages/footer/about-us/careers)\n - [Frequently asked questions](/redirect-pages/footer/about-us/frequently-asked-questions)\n - [Library](/redirect-pages/footer/about-us/library)\n - [Procurement](/redirect-pages/footer/about-us/procurement)\n - [Publications](/redirect-pages/footer/about-us/publications)\n\n\n\n\n\n\n\n\n\n\n\n\n - [Contact us](/about/contact-us)\n\n\n\n\n\n\n\n[Newsletters](/redirect-pages/footer/about-us/newsletters)\n\n\n\n\n\n\n\n[Report misconduct](/about/office-of-internal-oversight-services/integrity-hotline)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n[Privacy policy](/about/policies/privacy)\n\n\n\n\n\n\n\n\n\n\n\n[https://www.youtube.com/user/who?sub_confirmation=%5BREDACTED%5D [https://twitter.com/intent/follow?source=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D [https://www.facebook.com/WHO](https://www.facebook.com/WHO) [https://instagram.com/who](https://instagram.com/who) [https://www.linkedin.com/company/world-health-organization](https://www.linkedin.com/company/world-health-organization) [https://www.snapchat.com/add/who](https://www.snapchat.com/add/who) [https://www.tiktok.com/@who?lang=%5BREDACTED%5D\n\n\n\n\n\n\n\n © 2026\n\n\n\n[WHO](/about/policies/terms-of-use)", "content_length": 16022, "content_type": "text/html", "description": "WHO provides the latest disease outbreak news, offering information on confirmed public health emergencies or events of potential concern.", "status_code": 200, "success": true, "title": "Disease Outbreak News", "url": "https://www.who.int/emergencies/disease-outbreak-news"}, "status": "completed", "tool_name": "web_fetch"}
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[Home](/)/\n - [Disease Outbreak News](/emergencies/disease-outbreak-news)/\n - [Item](/emergencies/disease-outbreak-news/item)/\n - Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## Disease Outbreak News\n\n\n\n# Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n 10 September 2026\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n### Situation at a glance\n\n\n\n Since the last Disease Outbreak News was published on 28 August 2026, the Bundibugyo virus outbreak in the Democratic Republic of the Congo has expanded to one additional health zone, Kayna, in North Kivu. This increase brings the total number of affected health zones to 61 across six out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, and Tshopo. As of 7 September 2026, the Democratic Republic of the Congo has reported 6757 confirmed cases, including 3267 deaths, resulting in a crude case fatality ratio (CFR) of 48.3%. The transmission dynamics remain variable across affected locations, with evidence of ongoing geographical expansion and sustained increase in cases in some health zones. The continuously high CFR highlights the seriousness of the disease and persistent challenges in timely case detection, access to early and adequate patient care, and effective interruption of transmission. Delayed detection of cases continues to increase the risk of further spread within households, communities, and healthcare settings.\n\n\n\n\n\n\n\n### Description of the situation\n\n\n\n\n\nSince the publication of the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616) on 28 August 2026, additional confirmed cases and deaths of Bundibugyo virus disease (BVD) have been reported only in the Democratic Republic of the Congo.\n\nAs of 7 September 2026, a cumulative total of 6778 confirmed cases has been reported: 6757 in the Democratic Republic of the Congo (including two cases diagnosed in the Democratic Republic of the Congo and subsequently treated in Germany), 20 cases in Uganda and one case in France. Overall, 3269 deaths have been reported, including two in Uganda. As of 7 September, at least 1611 patients have recovered, including 1590 in the Democratic Republic of the Congo, 18 in Uganda, two in Germany and one in France.\n\nThe sustained level of transmission in the Democratic Republic of the Congo continues to pose a risk of cross-border spread. Health screening and surveillance activities remain operational at airports, ports, and official land border crossings; however, travel through informal crossing routes persists and may facilitate virus exportation, importation, and subsequent transmission. In this context, strengthened cross-border coordination, together with ongoing surveillance and preparedness efforts, remains critical to limiting further regional spread and supporting an effective public health response.\n\n**Figure 1. Distribution of cumulative confirmed cases of Bundibugyo virus disease in the Democratic Republic of the Congo, as of 7 September **\n\n\n\n**Democratic Republic of the Congo **\n\nSince the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616) was published on 28 August 2026, an additional 963 confirmed cases, including 481 confirmed deaths, have been reported in the Democratic Republic of the Congo. While part of this increase may be attributable to strengthened surveillance activities, enhanced laboratory testing, improved diagnostic capacity, and reconciliation of previously unreported data, the continued growth in both cases and deaths also reflects sustained community transmission and significant geographic expansion of the outbreak. As of 7 September, the Democratic Republic of the Congo has reported a total of 6757 confirmed cases, including 3267 deaths (CFR 48.3%). A total of 1590 patients have recovered to date.\n\nConfirmed cases have been reported from 61 health zones (HZ) across six provinces, with 51 HZ from five provinces reporting at least one case in the last 21 days. Ituri remains the most affected province, with 28 of its 36 health zones reporting cases, followed by North Kivu (16/34), Tshopo (7/23), Haut-Uélé (6/13), Bas-Uélé (3/11), and South Kivu (1/34). No new cases have been reported from South Kivu province since 29 May 2026. Kayna HZ in North Kivu province is the most recently affected area. As of 7 September, 71 new confirmed cases had been reported in the preceding 24 hours from 17 health zones located in Ituri, North Kivu, and Haut-Uélé provinces.\n\nIturi continues to be the epicentre of the outbreak, accounting for 5406 confirmed cases since the start of the outbreak, including 1114 new confirmed cases reported in the previous 21 days, as of 7 September. North Kivu is the second most affected province, with a cumulative number of 1066 confirmed cases, including 453 reported in the last 21 days, as of 7 September. One of the highest CFR (65.4%) observed in this outbreak has been reported from North Kivu province; and investigations are ongoing to better understand the factors contributing to this elevated mortality rate.\n\nThe number of individuals requiring follow-up as contact has also risen considerably with the expansion of the outbreak. As of 7 September, 85.3% of identified contacts were successfully monitored during the previous 24 hours with 21 359 contacts seen out of 24 719 requiring follow up. The large volume of contacts under surveillance highlights the extent of potential exposure within affected communities and the substantial demands placed on response operations.\n\nThe outbreak continues to unfold within a complex humanitarian setting characterized by insecurity, armed conflict, and widespread population displacement. More than 26 million people are experiencing acute food insecurity, while approximately one million internally displaced persons reside in Ituri Province alone. Ongoing insecurity and displacement limit access to healthcare and essential services, constrain the ability of response teams to reach affected areas, and impede surveillance, case investigation and contact tracing activities. Overcrowding, limited water, sanitation and hygiene services, and restricted access to healthcare in mining communities, informal settlements and sites for internally displaced persons further undermine early case detection, infection prevention and control measures, and the provision of timely care. These conditions also reduce the effectiveness of response interventions and outreach efforts.\n\n**Figure 2: Number of confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo, by date of notification, as of 7 September 2026**\n\n\n\n**Figure 3: Number of deaths among confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo by date of notification, as of 7 September 2026. **\n\n\n\n\n\n\n\n\n\n\n\n### Epidemiology\n\n\n\n\n\nBundibugyo virus disease (BVD) is a severe Ebola disease caused by the Bundibugyo virus, one of the *Orthoebolavirus *species. It is a zoonotic disease, with fruit bats suspected to be the natural reservoir.\n\nHuman infection is thought to occur through close contact with the blood or secretions of infected wildlife, such as bats or non-human primates, and it subsequently spreads from person-to-person through direct contact with the blood, secretions, organs, or other bodily fluids of infected individuals or contaminated surfaces and materials. Transmission is particularly amplified in health-care settings when IPC measures are inadequate and during unsafe burial practices involving direct contact with deceased individuals.\n\nThe incubation period for BVD ranges from two to 21 days, and infected individuals are not infectious until symptom onset. Early symptoms such as fever, fatigue, muscle pain, headache, and sore throat are non-specific, which complicates clinical diagnosis and can delay detection. These symptoms then progress to gastrointestinal symptoms, organ dysfunction, and, in some cases, haemorrhagic manifestations.\n\nThe historical CFR from the past two BVD outbreaks, reported in Uganda and in the Democratic Republic of the Congo in 2007 and 2012, were 30% and 50%, respectively.\n\nDifferentiating BVD from other endemic febrile illnesses such as malaria is challenging without laboratory confirmation using polymerase chain reaction (PCR) or antigen- or antibody-based assays. Outbreak control relies on rapid case identification, isolation and care, contact tracing, safe burials and strong community engagement, as no approved vaccines or specific treatments currently exist for BVD.\n\nSince first detected in May 2026, this BVD outbreak has rapidly evolved into a large and geographically expanding epidemic in the Democratic Republic of the Congo, with sustained transmission, high mortality and an increasing risk of further international spread. The current outbreak is the second documented Bundibugyo virus disease outbreak in the country, after the 2012 outbreak, and the largest Ebola disease outbreak ever recorded in the Democratic Republic of the Congo irrespective of Ebola virus species. The population at greatest risk of exposure is concentrated in communities living in and moving through the health areas with active transmission. \n\n\n\n\n\n\n\n\n\n### Public health response\n\n\n\n\n\nFor detailed information about the ongoing public health response actions by the Ministry of Health, WHO and partners please refer to the latest situation reports published by the WHO Regional Office for Africa: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26)\n\nHealth authorities in the Democratic Republic of the Congo, in collaboration with WHO and partners, are continuing to implement and coordinate extensive public health measures, including disease surveillance, laboratory testing, infection prevention and control, clinical care, community engagement, research, logistics and support for response interventions and essential health services, engaging donors and mobilizing additional resources to address critical funding gaps and sustain response operations across affected and at-risk areas. A substantial scale-up is ongoing across all response pillars to get ahead of the outbreak. \n\n\n\n\n\n\n\n\n\n### WHO risk assessment\n\n\n\n\n\nOn 14 August 2026, WHO reassessed the risk of the outbreak of BVD, incorporating newly available information on the evolving situation. The risk for countries sharing land borders with the Democratic Republic of the Congo was separated from the risk for other countries in the African Region.\n\nThe risk in the Democratic Republic of the Congo was assessed as very high, the risk for countries sharing land borders with the Democratic Republic of the Congo was again assessed as high, and the risks for the rest of the African region and at the global level was again assessed as low.\n\nFor further information, please see [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4)****\n\n\n\n\n\n\n\n\n\n### WHO advice\n\n\n\n\n\nBased on the currently available information, WHO advises against any restriction of travel to, or trade with, affected countries. WHO continues to closely monitor and, where necessary, verify travel and trade measures in relation to this event.\n\nThe updated [Temporary Recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) issued to States Parties on 24 August 2026 underscore the importance of coordinated outbreak control, strengthened cross‑border collaboration, and sustained surveillance and preparedness to prevent further regional spread and ensure an effective public health response. Rapid recognition of cases, testing and optimized supportive care can reduce mortality, and improve community perceptions and acceptance of health care within the response.\n\nOn 7 August, the WHO Technical Advisory Group on candidate vaccine prioritization released a report regarding possible candidate vaccines for Bundibugyo virus disease. The members recommended that Ervebo, the only licensed Ebola vaccine (previously known as ebolavirus Zaire), be prioritized for inclusion in a randomized clinical trial in the context of the ongoing outbreak in the Democratic Republic of the Congo. Following a review of additional evidence on 19 August 2026, the WHO Strategic Advisory Group of Experts on Immunization (SAGE) concluded that available evidence remains insufficient to support the programmatic use of Ervebo for the prevention of BVD, and that its efficacy against BVD in humans remains unknown. WHO therefore recommends that Ervebo be used for BVD only within the context of a research protocol. Ervebo vaccination of healthcare and frontline workers is now underway. As of 6 September 2026, a total of 2007 people had been vaccinated across six health zones in three provinces: Tshopo, Bas-Uélé and Ituri.\n\nOn 2 July, a clinical trial to find effective treatments against BVD began patient enrollment on 2 July. The trial, known as the PARTNERS trial, is now open in five different clinical management facilities in Ituri province, and has enrolled over 300 people who are confirmed cases. \n\n\n\n\n\n\n\n\n\n### Further information\n\n\n\n\n\n**Regular Information products on the outbreak o****f Bundibugyo virus disease ******\n\n- **Daily update: **[Epidemiological update on BVD outbreak in Democratic Republic of the Congo](https://www.who.int/emergencies/alert-and-response)\n- **Published weekly: **[Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) | WHO| Regional Office for Africa\n- **Published biweekly:**[****Disease Outbreak News | All Hazards Public Health Events, Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo](https://www.who.int/emergencies/disease-outbreak-news)\n\n**Additional information**\n\n**Current outbreak: declarations and status**\n\n- [Africa CDC and WHO launch joint continental Ebola response plan](https://www.who.int/news/item/05-06-2026-africa-cdc-and-who-launch-joint-continental-ebola-response-plan)\n- [Bundibugyo Ebola virus | Continental preparedness and response plan: June-November 2026](https://www.afro.who.int/publications/bundibugyo-ebola-virus-continental-preparedness-and-response-plan-june-november-2026)\n- [Epidemic of Ebola Disease caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda determined a public health emergency of international concern](https://www.who.int/news/item/17-05-2026-epidemic-of-ebola-disease-in-the-democratic-republic-of-the-congo-and-uganda-determined-a-public-health-emergency-of-international-concern)\n- [The Ministry of Public Health, Hygiene and Social Welfare, DRC, officially declares the 17th Ebola Disease outbreak](https://administration.sante.gouv.cd/wp-content/uploads/2026/05/Declaration-de-la-17e-Epidemie-de-la-maladie-a-virus-Ebola-dans-les-zones-de-sante-de-Rwampara-Mongwalu-et-Bunia-dans-la-province-dIturi.pdf)\n- [WHO Democratic Republic of Congo confirms new Ebola outbreak](https://www.afro.who.int/countries/democratic-republic-of-congo/news/democratic-republic-congo-confirms-new-ebola-outbreak-who-scales-upsupport)\n- [Message by the WHO Director-General to the people of the Democratic Republic of the Congo](https://www.who.int/news/item/28-05-2026-message-by-the-who-director-general-to-the-people-of-the-democratic-republic-of-the-congo)\n- [At the frontline of trust: a day with Julienne Anoko WHO's Ebola Community Engagement Officer in DRC](https://www.afro.who.int/countries/democratic-republic-of-congo/news/frontline-trust-day-julienne-anoko-whos-ebola-community-engagement-officer-drc)\n- [Decentralized testing speeds up Ebola response in the Democratic Republic of the Congo](https://www.afro.who.int/countries/democratic-republic-of-congo/news/decentralized-testing-speeds-ebola-response-democratic-republic-congo)\n- [Uganda ends Ebola outbreak following completion of 42-day countdown | WHO | Regional Office for Afri…](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown)\n- [Second meeting of the IHR Emergency Committee on the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo – Temporary recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations)\n\n**WHO Rapid risk assessments**\n\n- [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4)\n\n**Epidemiological updates and situation reports**\n\n- [Weekly External Situation Report. EBOLA BUNDIBUGYO VIRUS DISEASE OUTBREAK Democratic Republic of the Congo | Uganda.](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26)\n- [Ebola Outbreak: Current Situation | Ebola | CDC](https://www.cdc.gov/ebola/situation-summary/index.html)\n- [Daily situation report, Ministry of Health, Democratic Republic of the Congo.](https://insp.cd/category/sitrep/)\n- [Press Statements - Ministry of Health - Uganda](https://health.go.ug/press-statements/)\n- [Ebola updates, Ministry of Health, Uganda](https://evd-daily.health.go.ug/)\n\n**Published Disease Outbreak News (current outbreak)**\n\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 16 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON602)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 21 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON603)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 29 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON605)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 8 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON606)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 13 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON607)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 19 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON608)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 3 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON612)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 17 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON613)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 1 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON614)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 14 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 28 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616)\n\n**Clinical management, IPC, and occupational safety**\n\n- [WHO guidelines for the clinical management of filovirus disease](https://www.who.int/publications/i/item/B09774)\n- [Infection prevention and control guideline for Ebola and Marburg disease. WHO.17 May 2026](https://www.who.int/publications/i/item/9789240111332)\n- [Infection prevention and control and water, sanitation and hygiene in health facilities during Ebola or Marburg disease outbreaks: rapid assessment tool, user guide.](https://www.who.int/publications/i/item/9789240107205)\n- [Assessment and management of health and care workers with possible occupational exposures to Orthoebolavirus or Orthomarburgvirus: implementation guidance](https://www.who.int/publications/i/item/9789240107328)\n- [Optimized Supportive Care for Ebola Virus Disease. Clinical management standard operating procedures. WHO. 2019](https://www.who.int/publications/i/item/9789241515894)\n- [Framework and toolkit for infection prevention and control in outbreak preparedness, readiness and response at the national level](https://www.who.int/publications/i/item/9789240032729)\n- [Diagnostic testing for Ebola disease and Marburg virus disease: interim guidance, 9 July 2026](https://iris.who.int/handle/10665/386711)\n- [Considerations for border health and points of entry for filovirus disease outbreaks](https://www.who.int/publications/m/item/considerations-for-border-health-and-points-of-entry-for-filovirus-disease-outbreaks)\n\n**Vaccines**\n\n- [Third meeting of the WHO Technical Advisory Group on candidate vaccine prioritization (TAG-CVP) for Bundibugyo virus disease outbreak response: meeting report, 31 July 2026](https://www.who.int/publications/i/item/B09865)\n- [WHO press release regarding a clinical trial to find effective treatments against Bundibugyo virus disease.](https://www.who.int/news/item/02-07-2026-patient-enrolment-begins-in-a-scientific-trial-to-identify-the-first-effective-treatments-for-bundibugyo-virus-disease) \n\n**Training**\n\n- [WHO Launches Online Training to Strengthen Filovirus Outbreak Response](https://www.who.int/news/item/26-03-2025-who-launches-online-training-to-strengthen-filovirus-outbreak-response)\n\n**Prior Bundibugyo virus disease events, DRC (2012)**\n\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 14 September 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_09_14-en)\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 26 October 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_10_26-en)\n\n**Background and reference**\n\n- [Ebola disease fact sheet](https://www.who.int/news-room/fact-sheets/detail/ebola-disease)\n- [Ebola vaccines](https://www.who.int/news-room/questions-and-answers/item/ebola-vaccines)\n\n**Citable reference:** World Health Organization (10 September 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. 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{"dispatch_id": "toolu_01DuDodAwfmTXkfowatBn3bz", "elapsed": 0.041676926, "error": "", "result": {"content": "Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo [Skip to main content](#content)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [](https://www.who.int/) [Global](https://www.who.int/)\n - Regions\n\n\n\n\n\n\n\n  WHO Regional websites\n\n**\n\n\n\n\n\n\n - [![Africa]() Africa](https://www.afro.who.int/)\n - [![Americas]() Americas](https://www.paho.org/en)\n - [![South-East Asia]() South-East Asia](https://www.who.int/southeastasia)\n - [![Europe]() Europe](https://www.who.int/europe/)\n - [![Eastern Mediterranean]() Eastern Mediterranean](http://www.emro.who.int/index.html)\n - [![Western Pacific]() Western Pacific](https://www.who.int/westernpacific/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n **\n\n ** When autocomplete results are available use up and down arrows to review and enter to select.\n\n\n\n\n\n ** Select language Select language English العربية 中文 Français Русский Español Português **\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n [#XWVXNQGG](#XWVXNQGG)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [#XFEJCAUE](#XFEJCAUE)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - 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[Home](/)/\n - [Disease Outbreak News](/emergencies/disease-outbreak-news)/\n - [Item](/emergencies/disease-outbreak-news/item)/\n - Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## Disease Outbreak News\n\n\n\n# Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo\n\n\n\n 28 August 2026\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n### Situation at a glance\n\n\n\n Since the last Disease Outbreak News was published on 14 August 2026, the outbreak has spread from 54 to 60 health zones. The number of affected provinces stands at six out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, and Tshopo. Six additional health zones reported cases since the last update - Ganga and Viadana health zones in Bas-Uélé province, Biena, Manguredjipa, and Mutwanga in North Kivu, and Tshopo health zone in Tshopo province. As of 26 August 2026, a total of 5794 confirmed cases, including 2786 deaths, have been reported, corresponding to a crude case fatality ratio (CFR) of 48.1%. These figures demonstrate a substantial increase in the scale and geographic extent of the outbreak over the past three months. The crude case fatality ratio of 48% underscores the severity of the disease and ongoing challenges related to timely case detection, access to and quality of clinical care, and effective interruption of viral transmission. Delays in recognizing cases increase the likelihood of onward transmission within households, communities and healthcare facilities. The outbreak remains a public health emergency of international concern, following the advice of Emergency Committee meeting convened on 18 August.\n\n\n\n\n\n\n\n### Description of the situation\n\n\n\n\n\nSince the previous [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) was published on 14 August 2026, additional confirmed cases and deaths of BVD have been reported only in the Democratic Republic of the Congo. \n\nCumulatively as of 26 August 2026, 5815 confirmed cases have been reported: 5794 in the Democratic Republic of the Congo (including two cases diagnosed in the Democratic Republic of the Congo and subsequently treated in Germany), 20 in Uganda and one in France. A total of 2788 deaths have been reported, including two in Uganda. As of 26 August, at least 1314 patients have recovered, including 1293 in the Democratic Republic of the Congo, 18 in Uganda, two in Germany and one in France. \n\nAs of 27 August, the 42-day enhanced monitoring period, as per international guidance, has been completed in both France and [Uganda](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown). \n\nThe continuing intensity of transmission in the Democratic Republic of the Congo means that the risk of further exportation across international borders remains. Entry and exit health screening and surveillance measures are in place at airports, ports and official land border crossings; however, movement through informal border crossing routes may occur, presenting an ongoing risk of virus exportation, importation and onward transmission. Therefore, cross‑border collaboration, and sustained surveillance and preparedness are essential to prevent further regional spread and ensure an effective public health response. \n\nOn 27 August, vaccination of health care workers using the Ervebo vaccine was initiated in the Democratic Republic of the Congo in some areas, including in Kisangani, Tshopo province. Although Ervebo is a safe vaccine, and effective against Ebola virus disease, it is not known whether it provides protection against the Bundibugyo virus in humans. Thus, starting a clinical trial of the vaccine, alongside this wider use, is key to provide important new evidence and inform future use of the vaccine. \n\nThe second IHR Emergency Committee meeting regarding the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo took place on 18 August. Following the advice of the Committee, the Director-General agreed that the ongoing outbreak remains a Public Health Emergency of International Concern, and issued updated temporary recommendations to countries. \n\n**Figure 1. Distribution of cumulative confirmed cases of Bundibugyo virus disease in the Democratic Republic of the Congo, as of 26 August** \n\n\n\n**Democratic Republic of the Congo **\n\nSince 14 August 2026 when the last [Disease Outbreak News](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) was published, an additional 1129 confirmed cases, including 602 confirmed deaths, have been reported in the Democratic Republic of the Congo. Although part of this increase likely reflects expanded surveillance, enhanced laboratory testing, improved diagnostic capacity, and periodic data backlog reconciliation, the sustained rise in number of cases and deaths are the result of continued transmission and substantial outbreak expansion. As of 26 August 2026, a total of 5794 confirmed cases, including 2786 deaths (CFR 48.1%), have been reported in the Democratic Republic of the Congo. To date, 1293 patients have recovered. \n\nCases have been reported from 60 health zones (HZ) across six provinces. Ituri has 28 health zones affected out of 36, followed by North Kivu (15/34), Haut-Uélé (6/13), Tshopo (7/23), South Kivu (1/34) and Bas Uélé (3/11). The most recently affected province, Bas-Uélé, started reporting cases since 12 August. The most recently affected health zones are Biena and Manguredjipa in North Kivu province. As of 26 August, of the 60 affected health zones, 81 new confirmed cases were reported in the last 24 hours from 19 health zones in Ituri, North Kivu, Haut-Uélé, and Tshopo provinces. Ituri remains the epicentre of the outbreak, with 4802 confirmed cases reported since the start of the outbreak, including 52 new confirmed cases reported in the last 24 hours, as of 26 August. Nord-Kivu is the second most affected province, with a cumulative number of 775 confirmed cases, including 22 reported in the last 24 hours, as of 26 August. The highest CFR (68%) in this outbreak has been reported from North Kivu province; the reasons for this high CFR are under investigation. \n\nThe number of individuals requiring contact monitoring has also increased substantially as the outbreak has expanded. As of 26 August, the proportion of contacts followed up in the last 24 hours is at 82.3% (22 091 seen out of 26 850 to follow up). The large number of contacts reflects the scale of potential exposure within affected communities. \n\nThe outbreak is unfolding in a conflict-affected humanitarian context marked by insecurity, armed violence, and large-scale displacement. More than 26 million people face acute food insecurity, and an estimated one million internally displaced people live in Ituri Province alone. Insecurity and displacement disrupt access to health care and essential services, restrict access for response teams, and impede surveillance, case investigation and contact follow-up. Overcrowding, limited water, sanitation and hygiene services, and restricted access to healthcare in mining communities, informal settlements and sites for internally displaced people further hinder early detection, infection prevention, and appropriate care. These conditions also make it harder to implement response measures consistently and to reach affected populations. \n\n**Figure 2: Number of confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo, by date of notification, as of 26 August 2026**\n\n\n\n**Figure 3: Number of deaths among confirmed Bundibugyo virus disease cases in the Democratic Republic of the Congo by date of notification, as of 26 August 2026**\n\n, including suspected cases among travellers and health-care workers and reports circulating in public sources, were subsequently ruled out through investigation and laboratory testing. The remaining six were confirmed as Ebola events. \n\n\n\n\n\n\n\n\n\n### Epidemiology\n\n\n\n\n\nBundibugyo virus disease (BVD) is a severe Ebola disease caused by the Bundibugyo virus, one of the *Orthoebolavirus* species. It is a zoonotic disease, with fruit bats suspected to be the natural reservoir. \n\nHuman infection is thought to occur through close contact with the blood or secretions of infected wildlife, such as bats or non-human primates, and it subsequently spreads from person-to-person through direct contact with the blood, secretions, organs, or other bodily fluids of infected individuals or contaminated surfaces and materials. Transmission is particularly amplified in health-care settings when IPC measures are inadequate and during unsafe burial practices involving direct contact with deceased individuals. \n\nThe incubation period for BVD ranges from two to 21 days, and infected individuals are not infectious until symptom onset. Early symptoms such as fever, fatigue, muscle pain, headache, and sore throat are non-specific, which complicates clinical diagnosis and can delay detection. These symptoms then progress to gastrointestinal symptoms, organ dysfunction, and, in some cases, haemorrhagic manifestations. \n\nCFRs in the past two BVD outbreaks, reported in Uganda and in the Democratic Republic of the Congo in 2007 and 2012, were 30% and 50%, respectively. \n\nDifferentiating BVD from other endemic febrile illnesses such as malaria is challenging without laboratory confirmation using PCR or antigen- or antibody-based assays. Outbreak control relies on rapid case identification, isolation and care, contact tracing, safe burials and strong community engagement, as no approved vaccines or specific treatments currently exist for BVD. \n\nSince first detected in May 2026, this BVD outbreak has rapidly evolved into a large and geographically expanding epidemic in the Democratic Republic of the Congo, with sustained transmission, high mortality and an increasing risk of further international spread. The current outbreak is the second documented Bundibugyo virus disease outbreak in the country, after the 2012 outbreak, and the largest Ebola disease outbreak ever recorded in the Democratic Republic of the Congo irrespective of Ebola virus species. The population at greatest risk of exposure is concentrated in communities living in and moving through areas with active transmission. \n\n\n\n\n\n\n\n\n\n### Public health response\n\n\n\n\n\nFor detailed information about the ongoing public health response actions by the Ministry of Health, WHO and partners please refer to the latest situation reports published by the WHO Regional Office for Africa: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) \n\nHealth authorities in the Democratic Republic of the Congo, in collaboration with WHO and partners, are continuing to implement and coordinate extensive public health measures, including disease surveillance, laboratory testing, infection prevention and control, clinical care, community engagement, research, logistics and support for response interventions and essential health services, engaging donors and mobilizing additional resources to address critical funding gaps and sustain response operations across affected and at-risk areas. A substantial scale-up is ongoing across all response pillars to get ahead of the outbreak. \n\n\n\n\n\n\n\n\n\n### WHO risk assessment\n\n\n\n\n\nOn 14 August 2026, WHO reassessed the risk of the outbreak of BVD to incorporate newly available information. The risk for countries sharing land borders with the Democratic Republic of the Congo was separated from the risk for other countries in the African Region. \n\nThe risk in the Democratic Republic of the Congo was assessed as very high due to ongoing transmission and the continued expansion of the outbreak into new health zones, increasing the potential for further national and regional spread. The main considerations supporting this assessment include the substantial increase in the number of cases and considerable geographic extension of the outbreak since the previous risk assessment, and potential further increase in CFR as additional deaths are investigated and outcomes are established. In addition, reported transmission among healthcare workers, ongoing conflict and insecurity, laboratory capacity constraints, and absence of licensed vaccine or specific antiviral treatment were also considered as factors maintaining the very high risk. \n\nThe risk for countries sharing land borders with the Democratic Republic of the Congo was again assessed as high due to sustained population mobility linked to cross-border trade and mining activities, variation in capacities and experience of BVD response, and variable levels of readiness. Uganda, the Central African Republic and South Sudan are of particular concern for importation given their proximity, high population mobility and connectivity with areas of the Democratic Republic of the Congo currently experiencing intense transmission. For the Central African Republic and South Sudan, these risks are further compounded by high humanitarian needs, population displacement, insecurity and underlying limitations in health-system capacity. \n\nThe risk for the rest of the African region and at the global level was again assessed as low. \n\nFor further information, please see [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4) \n\n\n\n\n\n\n\n\n\n### WHO advice\n\n\n\n\n\nBased on the currently available information, WHO advises against any restriction of travel to, or trade with, affected countries. WHO continues to closely monitor and, where necessary, verify travel and trade measures in relation to this event. \n\nThe updated [Temporary Recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) issued to States Parties on 24 August 2026 underscore the importance of coordinated outbreak control, strengthened cross‑border collaboration, and sustained surveillance and preparedness to prevent further regional spread and ensure an effective public health response. Rapid recognition of cases, testing and optimized supportive care can reduce mortality, and improve community perceptions and acceptance of health care within the response. \n\nOn 7 August, the WHO Technical Advisory Group on candidate vaccine prioritization released a report regarding possible candidate vaccines for Bundibugyo virus disease. The members recommended that Ervebo, the only licensed Ebola vaccine (previously known as ebolavirus Zaire), be prioritized for inclusion in a randomized clinical trial in the context of the ongoing outbreak in the Democratic Republic of the Congo. \n\nIn addition, WHO is sponsoring a clinical trial to find effective treatments against BVD. The trial began enrollment on 2 July. The trial, known as the PARTNERS trial, is now open in three different clinical management facilities in Ituri province and has enrolled over 250 people who are confirmed cases. \n\n\n\n\n\n\n\n\n\n### Further information\n\n\n\n\n\n**Regular Information products on the outbreak of Bundibugyo virus disease **\n\nDaily update: [Epidemiological update on BVD outbreak in Democratic Republic of the Congo](https://www.who.int/emergencies/alert-and-response) \n\nPublished weekly: [Ongoing outbreak in the Democratic Republic of the Congo | WHO | Regional Office for Africa](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) | WHO| Regional Office for Africa \n\nPublished biweekly:[Disease Outbreak News | All Hazards Public Health Events, Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo](https://www.who.int/emergencies/disease-outbreak-news) \n\n**Additional information **\n\nCurrent outbreak: declarations and status \n\n- [Africa CDC and WHO launch joint continental Ebola response plan](https://www.who.int/news/item/05-06-2026-africa-cdc-and-who-launch-joint-continental-ebola-response-plan) \n- [Bundibugyo Ebola virus | Continental preparedness and response plan: June-November 2026](https://www.afro.who.int/publications/bundibugyo-ebola-virus-continental-preparedness-and-response-plan-june-november-2026) \n- [Epidemic of Ebola Disease caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda determined a public health emergency of international concern](https://www.who.int/news/item/17-05-2026-epidemic-of-ebola-disease-in-the-democratic-republic-of-the-congo-and-uganda-determined-a-public-health-emergency-of-international-concern) \n- [The Ministry of Public Health, Hygiene and Social Welfare, DRC, officially declares the 17th Ebola Disease outbreak](https://administration.sante.gouv.cd/wp-content/uploads/2026/05/Declaration-de-la-17e-Epidemie-de-la-maladie-a-virus-Ebola-dans-les-zones-de-sante-de-Rwampara-Mongwalu-et-Bunia-dans-la-province-dIturi.pdf) \n- [WHO Democratic Republic of Congo confirms new Ebola outbreak](https://www.afro.who.int/countries/democratic-republic-of-congo/news/democratic-republic-congo-confirms-new-ebola-outbreak-who-scales-upsupport) \n- [Message by the WHO Director-General to the people of the Democratic Republic of the Congo](https://www.who.int/news/item/28-05-2026-message-by-the-who-director-general-to-the-people-of-the-democratic-republic-of-the-congo) \n- [At the frontline of trust: a day with Julienne Anoko WHO's Ebola Community Engagement Officer in DRC](https://www.afro.who.int/countries/democratic-republic-of-congo/news/frontline-trust-day-julienne-anoko-whos-ebola-community-engagement-officer-drc) \n- [Decentralized testing speeds up Ebola response in the Democratic Republic of the Congo](https://www.afro.who.int/countries/democratic-republic-of-congo/news/decentralized-testing-speeds-ebola-response-democratic-republic-congo) \n- [Uganda ends Ebola outbreak following completion of 42-day countdown | WHO | Regional Office for Afri…](https://www.afro.who.int/countries/uganda/news/uganda-ends-ebola-outbreak-following-completion-42-day-countdown) \n- [Second meeting of the IHR Emergency Committee on the epidemic of Ebola Bundibugyo virus disease in the Democratic Republic of the Congo – Temporary recommendations](https://www.who.int/news/item/24-08-2026-second-meeting-of-the-ihr-emergency-committee-on-the-epidemic-of-ebola-bundibugyo-virus-disease-in-the-democratic-republic-of-the-congo-temporary-recommendations) \n\nWHO Rapid risk assessments \n\n- [WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4](https://www.who.int/publications/m/item/who-rapid-risk-assessment-ebola-disease-caused-by-bundibugyo-virus--democratic-republic-of-the-congo-v4) \n\nEpidemiological updates and situation reports \n\n- [Weekly External Situation Report. EBOLA BUNDIBUGYO VIRUS DISEASE OUTBREAK Democratic Republic of the Congo | Uganda.](https://www.afro.who.int/health-topics/ebola-disease/outbreak-drc-26) \n- [Ebola Outbreak: Current Situation | Ebola | CDC](https://www.cdc.gov/ebola/situation-summary/index.html) \n- [Daily situation report, Ministry of Health, Democratic Republic of the Congo.](https://insp.cd/category/sitrep/) \n- [Press Statements - Ministry of Health - Uganda](https://health.go.ug/press-statements/) \n- [Ebola updates, Ministry of Health, Uganda](https://evd-daily.health.go.ug/) \n\nPublished Disease Outbreak News (current outbreak) \n\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 16 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON602) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 21 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON603) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo. 29 May 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON605) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 8 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON606) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 13 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON607) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 19 June 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON608) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 3 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON612) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo and Uganda 17 July 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON613) \n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 1 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON614)\n- [Disease outbreak news. Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo 14 August 2026](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON615) \n\nClinical management, IPC, and occupational safety \n\n- [WHO guidelines for the clinical management of filovirus disease](https://www.who.int/publications/i/item/B09774) \n- [Infection prevention and control guideline for Ebola and Marburg disease. WHO.17 May 2026](https://www.who.int/publications/i/item/9789240111332) \n- [Infection prevention and control and water, sanitation and hygiene in health facilities during Ebola or Marburg disease outbreaks: rapid assessment tool, user guide.](https://www.who.int/publications/i/item/9789240107205) \n- [Assessment and management of health and care workers with possible occupational exposures to Orthoebolavirus or Orthomarburgvirus: implementation guidance](https://www.who.int/publications/i/item/9789240107328) \n- [Optimized Supportive Care for Ebola Virus Disease. Clinical management standard operating procedures. WHO. 2019](https://www.who.int/publications/i/item/9789241515894) \n- [Framework and toolkit for infection prevention and control in outbreak preparedness, readiness and response at the national level](https://www.who.int/publications/i/item/9789240032729) \n- [Diagnostic testing for Ebola disease and Marburg virus disease: interim guidance, 9 July 2026](https://iris.who.int/handle/10665/386711) \n- [Considerations for border health and points of entry for filovirus disease outbreaks](https://www.who.int/publications/m/item/considerations-for-border-health-and-points-of-entry-for-filovirus-disease-outbreaks) \n\n Vaccines \n\n- [Third meeting of the WHO Technical Advisory Group on candidate vaccine prioritization (TAG-CVP) for Bundibugyo virus disease outbreak response: meeting report, 31 July 2026](https://www.who.int/publications/i/item/B09865) \n- [WHO press release regarding a clinical trial to find effective treatments against Bundibugyo virus disease.](https://www.who.int/news/item/02-07-2026-patient-enrolment-begins-in-a-scientific-trial-to-identify-the-first-effective-treatments-for-bundibugyo-virus-disease) \n\nTraining \n\n[WHO Launches Online Training to Strengthen Filovirus Outbreak Response](https://www.who.int/news/item/26-03-2025-who-launches-online-training-to-strengthen-filovirus-outbreak-response) \n\nPrior Bundibugyo virus disease events, DRC (2012) \n\n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 14 September 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_09_14-en) \n- [Disease Outbreak News. Ebola outbreak in Democratic Republic of Congo – update. WHO. 26 October 2012](https://www.who.int/emergencies/disease-outbreak-news/item/2012_10_26-en) \n\nBackground and reference \n\n[Ebola disease fact sheet](https://www.who.int/news-room/fact-sheets/detail/ebola-disease) \n\n[Ebola vaccines](https://www.who.int/news-room/questions-and-answers/item/ebola-vaccines) \n\nCitable reference: World Health Organization (31 July 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo and Uganda. Available at \n\n[https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614) \n\nWorld Health Organization (1 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo and Uganda. Available at \n\n[https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON614) \n\nWorld Health Organization (14 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. Available at: [https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON615](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON615) \n\nWorld Health Organization (28 August 2026). Disease Outbreak News; Bundibugyo Virus Disease, Democratic Republic of the Congo. Available at: [https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON616](https://www/who.int/emergencies/disease-outbreak/news/item/2026-DON616) \n\n \n\n \n\n \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [See all DONs related to this event](https://www.who.int/emergencies/emergency-events/item/2026-e000253)\n\n\n\n\n\n\n\n [Read more about Ebola disease](/health-topics/ebola)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n - [Regions](/redirect-pages/footer/regions)\n - [Africa](/redirect-pages/footer/regions/africa)\n - [Americas](/redirect-pages/footer/regions/americas)\n - [Eastern Mediterranean](/redirect-pages/footer/regions/eastern-mediterranen)\n - [Europe](/redirect-pages/footer/regions/europe)\n - [South-East Asia](/redirect-pages/footer/regions/south-east-asia)\n - [Western Pacific](/redirect-pages/footer/regions/western-pacific)\n\n\n - [Policies](/redirect-pages/footer/who-policies)\n - [Cybersecurity](/redirect-pages/footer/who-policies/cybersecurity)\n - [Ethics](/redirect-pages/footer/who-policies/ethics)\n - [Information disclosure](/redirect-pages/footer/who-policies/information-disclosure)\n - [Permissions and licensing](/redirect-pages/footer/who-policies/permissions-and-licensing)\n - [Preventing sexual exploitation](/redirect-pages/footer/who-policies/preventing-sexual-exploitation)\n - [Terms of use](/redirect-pages/footer/who-policies/terms-of-use)\n\n\n - [About us](/redirect-pages/footer/about-us)\n - [Careers](/redirect-pages/footer/about-us/careers)\n - [Frequently asked questions](/redirect-pages/footer/about-us/frequently-asked-questions)\n - [Library](/redirect-pages/footer/about-us/library)\n - [Procurement](/redirect-pages/footer/about-us/procurement)\n - [Publications](/redirect-pages/footer/about-us/publications)\n\n\n\n\n\n\n\n\n\n\n\n\n - [Contact us](/about/contact-us)\n\n\n\n\n\n\n\n[Newsletters](/redirect-pages/footer/about-us/newsletters)\n\n\n\n\n\n\n\n[Report misconduct](/about/office-of-internal-oversight-services/integrity-hotline)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n [](/)\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n[Privacy policy](/about/policies/privacy)\n\n\n\n\n\n\n\n\n\n\n\n[https://www.youtube.com/user/who?sub_confirmation=%5BREDACTED%5D [https://twitter.com/intent/follow?source=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D&variant=%5BREDACTED%5D&screen_name=%5BREDACTED%5D [https://www.facebook.com/WHO](https://www.facebook.com/WHO) [https://instagram.com/who](https://instagram.com/who) [https://www.linkedin.com/company/world-health-organization](https://www.linkedin.com/company/world-health-organization) [https://www.snapchat.com/add/who](https://www.snapchat.com/add/who) [https://www.tiktok.com/@who?lang=%5BREDACTED%5D\n\n\n\n\n\n\n\n © 2026\n\n\n\n[WHO](/about/policies/terms-of-use)", "content_length": 40469, "content_type": "text/html", "description": "", "status_code": 200, "success": true, "title": "Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo", "url": "https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616"}, "status": "completed", "tool_name": "web_fetch"}
{"dispatch_id": "toolu_01Lv1Tb3obZ5nep4fRzDp5zw", "handle": "", "panel_kind": "", "parent_dispatch_id": "", "tool_input": {"final": true, "in_response_to": "e14f2266", "message": "Two DONs in the past 14 days, both on the same event: Ebola (Bundibugyo virus) in the Democratic Republic of the Congo.\n\n**[10 Sept 2026 (DON617)](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON617)**\n- Location: DRC, 61 health zones across 6 provinces (Ituri epicentre, plus North Kivu, Tshopo, Haut-Uélé, Bas-Uélé, South Kivu). New zone: Kayna, North Kivu.\n- Cases as of 7 Sept: 6757 confirmed in DRC, 3267 deaths, CFR 48.3%. Global total 6778 confirmed (20 Uganda, 1 France), 3269 deaths. 963 new cases and 481 new deaths since the prior DON. North Kivu CFR 65.4%.\n- Risk (reassessed 14 Aug): very high in DRC, high for bordering countries, low for the rest of Africa and globally. No travel or trade restrictions advised.\n\n**[28 Aug 2026 (DON616)](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616)**\n- Location: DRC, expanded from 54 to 60 health zones across the same 6 provinces.\n- Cases as of 26 Aug: 5794 confirmed in DRC, 2786 deaths, CFR 48.1%; 5815 confirmed worldwide, 2788 deaths. North Kivu CFR 68%.\n- Still a Public Health Emergency of International Concern per the 18 Aug Emergency Committee. Same risk ratings: very high / high / low. Uganda and France completed their 42-day monitoring periods on 27 Aug.\n\nNo other diseases or locations were published in that window."}, "tool_name": "send_message"}
{"dispatch_id": "toolu_01Lv1Tb3obZ5nep4fRzDp5zw", "elapsed": 15.05660779, "error": "", "result": "Delivered (confirmed) as 4 messages. Your draft was polished into texting register, so the wording differs from what you wrote; this is exactly what the user sees:\n1) Two reports on Ebola (Bundibugyo) in the DRC, same outbreak, 12 days apart.\n2) https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON617\nhttps://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616\n3) ### Ebola (Bundibugyo) outbreak progression · WHO Disease Outbreak News\n\n| Report | Location | Cases (DRC) | Deaths (DRC) | CFR | Global Cases | Risk |\n|--------|----------|------------|-------------|-----|--------------|------|\n| Sept 10 | 61 zones, 6 provinces; Ituri epicentre (NK new: Kayna) | 6757 confirmed | 3267 | 48.3% | 6778 (20 Uganda, 1 France) | Very high (DRC); high (bordering); low (rest) |\n| Aug 28 | 60 zones, 6 provinces | 5794 confirmed | 2786 | 48.1% | 5815 | Very high (DRC); high (bordering); low (rest) |\n4) 963 new cases and 481 new deaths in 12 days. North Kivu hit hardest (CFR 65.4% as of Sept 10). No travel or trade restrictions advised; Uganda and France cleared their monitoring periods by late August.\nThese are your words now, and this is the whole reply: the delivery layer chose its density and shape by design. Never dispute, re-explain, or apologize for the phrasing, and never send a supplement to restore detail it left out. Only a final send settles its request. Never chase wording with another send. If a fact in it is wrong and would change what the user does, correct it when their next message arrives.\n\nNothing else is open: no request awaits a reply and no work is running. A response with no tool call ends the run.\nanswers: e14f2266-ab00-44c4-9774-fd42c8dc310a", "status": "completed", "tool_name": "send_message"}
Two reports on Ebola (Bundibugyo) in the DRC, same outbreak, 12 days apart.
https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON617
https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON616
### Ebola (Bundibugyo) outbreak progression · WHO Disease Outbreak News
| Report | Location | Cases (DRC) | Deaths (DRC) | CFR | Global Cases | Risk |
|--------|----------|------------|-------------|-----|--------------|------|
| Sept 10 | 61 zones, 6 provinces; Ituri epicentre (NK new: Kayna) | 6757 confirmed | 3267 | 48.3% | 6778 (20 Uganda, 1 France) | Very high (DRC); high (bordering); low (rest) |
| Aug 28 | 60 zones, 6 provinces | 5794 confirmed | 2786 | 48.1% | 5815 | Very high (DRC); high (bordering); low (rest) |
963 new cases and 481 new deaths in 12 days. North Kivu hit hardest (CFR 65.4% as of Sept 10). No travel or trade restrictions advised; Uganda and France cleared their monitoring periods by late August.