Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo, Kenya and Nigeria
- Pays / zones concernés
- Democratic Republic of the Congo, Kenya, Nigeria
- Premier avis
- 2025-12-01
- Dernier avis
- 2026-11-06
- Nombre d’avis
- 10
Résumé officiel (texte original)
Since the publication of the previous Disease Outbreak News on 23 October 2026, the Bundibugyo virus disease (BVD) outbreak has expanded geographically in the Democratic Republic of the Congo.
While some areas have seen a slight decline in cases, sustained, high-level transmission continues overall in the Democratic Republic of the Congo. As of 3 November 2026, a total of 10 668 confirmed cases, including 5198 deaths (crude case fatality ratio: 48.7%), have been reported across 67 health zones in eight provinces, with active transmission ongoing in 51 health zones. The high proportion of deaths occurring in communities, especially among young children, continues to highlight challenges in early case detection and timely access to appropriate care. Of the 512 deaths reported since 21 October, 335 occurred in communities and 177 in treatment centres.
Since the last Disease Outbreak News, no new cases have been reported from Kenya or Nigeria. However, the high-level transmission in the Democratic Republic of the Congo indicates a continued need for readiness in the region, including cross-border surveillance, points of entry monitoring, timely case detection and coordinated preparedness and response measures. No new country has reported cases since the last Disease Outbreak News was published, however, two countries have medically evacuated confirmed cases among citizens: Switzerland and the United Kingdom of Great Britain and Northern Ireland.
Based on the currently available information, WHO advises against any restriction of travel to, or trade with, States Parties experiencing and/or responding to the public health event.
Évaluation du risque par l’OMS (texte original)
On 14 August 2026, WHO reassessed the risk of the outbreak of BVD. 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.
The 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 assessed as high, and the risks for the rest of the African region and at the global level was again assessed as low. For further information, please see WHO Rapid Risk Assessment-Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo v4.
In light of the evolving situation and newly available information, the rapid risk assessment is currently being revised to reassess the risk in affected countries, the African region and globally.
Historique des avis
- · 2026-DON625
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo, Kenya and Nigeria
Résumé officiel (texte original)
Since the publication of the previous Disease Outbreak News on 23 October 2026, the Bundibugyo virus disease (BVD) outbreak has expanded geographically in the Democratic Republic of the Congo.
While some areas have seen a slight decline in cases, sustained, high-level transmission continues overall in the Democratic Republic of the Congo. As of 3 November 2026, a total of 10 668 confirmed cases, including 5198 deaths (crude case fatality ratio: 48.7%), have been reported across 67 health zones in eight provinces, with active transmission ongoing in 51 health zones. The high proportion of deaths occurring in communities, especially among young children, continues to highlight challenges in early case detection and timely access to appropriate care. Of the 512 deaths reported since 21 October, 335 occurred in communities and 177 in treatment centres.
Since the last Disease Outbreak News, no new cases have been reported from Kenya or Nigeria. However, the high-level transmission in the Democratic Republic of the Congo indicates a continued need for readiness in the region, including cross-border surveillance, points of entry monitoring, timely case detection and coordinated preparedness and response measures. No new country has reported cases since the last Disease Outbreak News was published, however, two countries have medically evacuated confirmed cases among citizens: Switzerland and the United Kingdom of Great Britain and Northern Ireland.
Based on the currently available information, WHO advises against any restriction of travel to, or trade with, States Parties experiencing and/or responding to the public health event.
- · 2026-DON622
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo, Kenya and Nigeria
Résumé officiel (texte original)
Since the publication of the previous Disease Outbreak News on 8 October 2026, the Bundibugyo virus disease (BVD) outbreak has expanded geographically in the Democratic Republic of the Congo, as well as in the African Region, with Kenya and Nigeria reporting imported cases.
Sustained, high-level transmission continues in the Democratic Republic of the Congo. As of 20 October 2026, a total of 9704 confirmed cases, including 4687 deaths (crude case fatality ratio: 48.3%), have been reported across 66 health zones in eight provinces. The high proportion of deaths occurring in communities continues to highlight challenges in early case detection and timely access to appropriate care. Of the 482 deaths reported since the previous update, 307 occurred in communities and 175 in treatment centres.
On 6 October 2026, the Ministry of Health of Kenya reported the first laboratory-confirmed imported case of BVD in Kenya in an individual who had travelled from the Democratic Republic of the Congo to Kenya via Uganda. As of 20 October 2026, a total of nine cases of BVD including one death, has been reported in Kenya. The eight additional cases are all known contacts of the first imported case. There is currently no evidence of wider community transmission.
On 20 October 2026, Nigeria confirmed an imported case in the Federal Capital Territory Abuja in a patient who had travelled from Uganda to the country. The patient is currently in isolation and receiving medical care. Further investigations are ongoing to better understand the complete travel history and the possible source of exposure.
These developments underscore the need for sustained readiness in the region, including cross-border surveillance, points of entry monitoring, timely case detection and coordinated preparedness and response measures.
WHO advises against any restriction of travel to, or trade with, affected countries.
- · 2026-DON619
Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo
Résumé officiel (texte original)
On 5 October 2026, WHO was informed about a laboratory-confirmed imported case of Bundibugyo virus disease (BVD) in Kenya with travel history from the Democratic Republic of the Congo. The patient travelled from the Democratic Republic of the Congo to Kenya through Uganda. The patient was hospitalized and treated in Kenya but subsequently died on 5 October. Public health response measures have been initiated in Kenya and Uganda, including contact tracing.
Since the last Disease Outbreak News was published on 25 September 2026, the Bundibugyo virus outbreak in the Democratic Republic of the Congo has expanded to one additional health zone, Alimbongo health zone in North Kivu, adding to the geographic footprint of an outbreak that remains concentrated in the eastern part of the country.
As of 6 October 2026, the country has recorded 8728 confirmed cases and 4205 confirmed deaths, corresponding to a crude case fatality ratio (CFR) of 48.2%. The cases have been reported from 64 health zones across seven provinces out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, Sud Ubangi and Tshopo.
At the national level, transmission remains intense, although the burden is unevenly distributed. In some areas, there are clear signs that the epidemic is slowing down, although in others it continues to grow. Over the past three completed epidemiological weeks, new weekly cases nationwide have increased by 2.5% from 475 to 487, while new weekly deaths remain stable at 224 compared to 222.
The persistently high mortality, together with the large number of deaths occurring outside treatment centres, continues to point to delays in identifying illness and reaching appropriate care. Since the last Disease Outbreak News, 264 of the 372 reported deaths occurred in communities and 108 in treatment centres.
On 1 October, the Netherlands reported the medical evacuation of a healthcare worker who tested positive by PCR for Bundibugyo virus (BDBV) in the Democratic Republic of the Congo. At the time of reporting, the patient has been undergoing treatment in the Netherlands.
- · 2026-DON621
Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo
Résumé officiel (texte original)
Since the last Disease Outbreak News was published on 11 September 2026, the Bundibugyo virus outbreak in the Democratic Republic of the Congo has expanded further, with two additional health zones affected. These include Bulu health zone in a new province, Sud Ubangi, located on the north-west part of the country and Dungu health zone in Haut-Uélé province, bordering South Sudan. This brings the total number of affected health zones to 63 across seven provinces out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, Sud Ubangi and Tshopo. This latest geographic expansion increases the risk of cross-border transmission.
As of 23 September 2026, the Democratic Republic of the Congo has reported 7890 confirmed cases, including 3799 deaths, resulting in a crude case fatality ratio (CFR) of 48.1%.
At the national level, the number of new cases reported each day remains high. However, the situation varies across the country, with some provinces and health zones experiencing much higher levels of transmission than others.
The continuously high CFR, and especially the continuous high rate of deaths occurring in communities, highlights the seriousness of the disease and the persistent challenges in timely case detection and access to early and adequate patient care. These delays can contribute to preventable illness and deaths among people in affected and newly affected areas, while also allowing transmission to continue within households, communities, and healthcare settings.
- · 2026-DON617
Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo
Résumé officiel (texte original)
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.
- · 2026-DON616
Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo
Résumé officiel (texte original)
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.
- · 2026-DON615
Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo
Résumé officiel (texte original)
The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo is in a phase of intense transmission. It is the largest Ebola outbreak ever reported in the country and expanding faster than any previous Ebola outbreak. The epidemic is increasingly characterized by sustained transmission within interconnected geographic clusters. Initially confined to the Mongbwalu health zone in Ituri Province, the outbreak has now expanded to 54 health zones across six provinces (Ituri, North Kivu, South Kivu, Haut-Uélé, Tshopo, and Bas-Uélé). The most recently affected Bas-Uélé province recorded one confirmed case in Buta health zone with travel history to Haut-Uélé and onset of symptoms on 4 August.
As of 12 August 2026, a total of 4665 confirmed cases, including 2184 deaths, have been reported, corresponding to a crude case fatality ratio (CFR) of 46.8%. The ongoing rise in cases, broader geographic spread, and continued high mortality demonstrate the rapidly changing scope of this public health emergency of international concern. During the most recent reporting week (epidemiological week 32, 3 to 9 August 2026), the highest weekly number of reported cases (579) and deaths (304) were recorded, highlighting the exceptional pace of transmission.
The ongoing humanitarian crisis, compounded by insecurity, population displacement and mobility, and cross-border movements, continues to pose significant challenges to response efforts and increase the risk of further geographical spread. National authorities in the Democratic Republic of the Congo, continue to implement extensive response measures in collaboration with WHO and partners. However, a substantial scaling up of response activities is underway to get ahead of the outbreak. Following their missions to the Democratic Republic of the Congo, WHO’s Director-General and Regional Director for Africa, and the Director General of Africa CDC, highlighted surveillance activities and closer work with communities as priority areas. Expanding the number of treatment centers, across more areas, is underway, along with training for the health and care workers to staff them.
France has reported no secondary transmission following an imported case detected on 24 June 2026. As of 14 August, 41 days had passed since the patient’s discharge on 4 July, with no additional confirmed cases reported.
In Uganda the most recent imported case was discharged from a treatment centre on 16 July, and the 42-day enhanced monitoring period will cease on 27 August.
Uganda remains at risk of BVD re-introduction due to ongoing transmission in neighbouring Democratic Republic of the Congo and is undertaking heightened surveillance activities given continued population movement and the risk of cross-border transmission. A regional preparedness and prioritization framework continues to guide readiness and response activities across the African Region.
- · 2026-DON614
Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo
Résumé officiel (texte original)
The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo is intensifying, with sustained transmission and continued increases in reported cases and deaths. Initially confined to the Mongbwalu health zone in Ituri Province, over the last two months, the outbreak has expanded to five provinces (Ituri, North Kivu, South Kivu, Haut-Uélé and Tshopo), now affecting 49 health zones.
The outbreak is now the largest Ebola outbreak ever reported in the Democratic Republic of the Congo. As of 30 July 2026, a total of 3605 confirmed cases, including 1587 deaths, have been reported, corresponding to a crude case fatality ratio (CFR) of 44%. The continued increase in cases, expanding geographic spread, and persistently high mortality underscore the rapidly evolving nature of this public health emergency. During the most recent complete reporting week (epidemiological week 30), the highest weekly number of reported cases (567) and deaths (296) to date were recorded, underscoring the exceptional pace of transmission.
The convergence of insecurity, population displacement and mobility, and cross-border movements complicate response operations and increase the risk of further geographical spread. National authorities in the Democratic Republic of the Congo, in collaboration with WHO and partners, continue to implement extensive response measures, however, a substantial scaling up of response activities is needed to get ahead of the outbreak. A regional preparedness and prioritization framework continues to guide readiness and response activities across the African Region.
The confirmed BVD case reported in France on 24 June 2026 following deployment to support the outbreak in the Democratic Republic of the Congo recovered and was discharged on 4 July 2026 after two consecutive negative PCR test results. No secondary transmission has been identified, and all five flight contacts, as well as those listed in the Democratic Republic of the Congo completed their 21-day follow-up without developing symptoms. As of 1 August 2026, France has not reported any additional confirmed BVD cases for 28 days since the patient's discharge.
On 28 July, the Ministry of Health of Uganda declared the end of the BVD outbreak in the country, following 42 days without a new confirmed locally transmitted case after the last confirmed case was discharged from care on 16 June 2026. The most recent imported case was discharged from a treatment centre on 16 July after two negative tests results. Following international guidance WHO will be monitoring the situation for 42 days from this date to ensure no chains of transmission have been missed. Uganda remains at risk of imported cases and re-introduction of BVD, due to ongoing transmission in neighbouring Democratic Republic of the Congo. WHO reiterates the need to maintain heightened surveillance, preparedness and control measures, particularly in view of continued population movement and the risk of cross-border transmission.
- · 2026-DON603
Ebola disease caused by Bundibugyo virus – Democratic Republic of the Congo
Résumé officiel (texte original)
On 15 May 2026, the Ministry of Public Health, Hygiene and Social Welfare, Democratic Republic of the Congo (DRC), and the Ministry of Health of Uganda declared an outbreak of Ebola Disease following the confirmation of Bundibugyo virus disease (BVD) in both countries.
On 17 May 2026, the World Health Organization (WHO) Director-General determined that the Ebola disease caused by Bundibugyo virus in DRC and Uganda constitutes a public health emergency of international concern (PHEIC), as defined in the provisions of IHR.
On 19 May 2026, the Director-General of WHO convened the first meeting of the IHR Emergency Committee, and temporary recommendations were issued to State Parties.
As of 21 May, 746 suspected cases and 176 deaths among suspected cases were reported in DRC. So far 85 confirmed cases, including two in Uganda, and ten deaths, with one in Uganda, among confirmed cases were reported across both countries. In DRC, transmission is concentrated in Ituri, North Kivu and South Kivu provinces, with challenges in contact follow-up, insecure conditions, and inadequate isolation and referral systems complicating response efforts. Uganda has reported two imported cases with no confirmed local transmission. An American national who was working in DRC has also been confirmed positive and transferred to Germany for care.
National authorities, in collaboration with WHO and partners, are implementing response measures including deployment of rapid response teams, delivery of medical supplies, strengthened surveillance, laboratory confirmation, infection prevention and control assessments, the set-up of safe and optimized treatment centers, and community engagement.
- · 2025-DON589
Ebola virus disease – Democratic Republic of the Congo
Résumé officiel (texte original)
On 1 December 2025, the Ministry of Health (MoH) of the Democratic Republic of the Congo (DRC) declared the end of the Ebola virus disease (EVD) outbreak which had been declared on 4 September 2025. The end was declared after two consecutive incubation periods (a total of 42 days) since the last person confirmed with EVD tested negative for the virus and was discharged on 19 October 2025. A total of 64 cases (53 confirmed, 11 probable), including 45 deaths (CFR 70.3%), were reported from six health areas in Bulape Health Zone, Kasai Province. WHO and partners provided technical, operational and financial support to the government to contain the outbreak. This is the country’s 16th outbreak of Ebola.
Although the outbreak has been declared over, health authorities are maintaining surveillance to rapidly identify and respond to any re-emergence. Risk communication and community engagement activities will continue to provide accurate information, monitor and address community feedback and rumours, and support efforts to reduce stigma toward individuals affected by the outbreak.
Maladie à virus Ebola
Maladie grave, souvent mortelle, causée par des orthoebolavirus (par exemple les virus Zaire, Sudan, Bundibugyo), survenant principalement lors de flambées épidémiques en Afrique subsaharienne.
