The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo (DRC) and Uganda is a rapidly evolving crisis that demands urgent attention and a comprehensive response. As of June 6, 2026, the situation is dire, with a total of 515 confirmed cases and 91 deaths in the DRC, and 19 confirmed cases with two deaths in Uganda. The outbreak, which began in May, has already claimed 93 lives and infected 534 people across both countries, with a case fatality rate of 17.4%.
What makes this outbreak particularly concerning is the rapid spread and the fact that it is a severe and often fatal form of Ebola disease. The Bundibugyo virus, one of the Orthoebolavirus species, is zoonotic, with fruit bats suspected to be the natural reservoir. Human infection occurs through close contact with the blood or secretions of infected wildlife, and it can spread from person to person through direct contact with bodily fluids.
The DRC is bearing the brunt of the outbreak, with 94% of confirmed cases in Ituri Province. The CFR in Ituri is 15%, significantly lower than the 64% in North Kivu. The highest case numbers are reported from Bunia, Rwampara, Mongbwalu, and Nyankunde health zones. Uganda, on the other hand, has reported 19 confirmed cases, all linked to travelers from the DRC.
The public health response is multifaceted, involving health authorities, the World Health Organization (WHO), and partners. Key activities include implementing the continental response plan, engaging donors, strengthening surveillance, increasing laboratory capacity, infection prevention and control, setting up treatment centers, risk communication, and community engagement. The WHO has also convened technical advisory groups to assess candidate vaccines and therapeutics for BVD.
However, the response faces significant challenges. Increasing security-related incidents affecting health facilities have disrupted surveillance and response activities. The outbreak remains concentrated in Ituri Province, and the CFR is significantly lower in Ituri than in North Kivu. The risk of further national and regional spread is high, and the outbreak has already spread to Uganda.
The WHO has reassessed the risk of the outbreak, separating the risk for countries sharing land borders with the DRC and Uganda from the risk for other countries in the African Region. The risk in the DRC is very high, while the risk in Uganda is high. The risk for countries with land borders adjoining the DRC is also high due to sustained population mobility and variable levels of readiness.
In my opinion, the BVD outbreak in the DRC and Uganda is a stark reminder of the ongoing threat of Ebola and the need for robust public health preparedness and response. The rapid spread of the outbreak and the high case fatality rate underscore the importance of coordinated efforts to control the outbreak and prevent further regional spread. The WHO's reassessment of the risk and the launch of the joint continental response plan are welcome steps, but more needs to be done to ensure an effective public health response.
As an expert, I believe that the key to success lies in strengthening surveillance, increasing laboratory capacity, and implementing infection prevention and control measures. Community engagement and risk communication are also crucial to ensuring that people understand the risks and take appropriate precautions. The WHO's advice against any restriction of travel or trade is prudent, but it is essential to closely monitor and verify travel and trade measures to prevent the further spread of the outbreak.
In conclusion, the BVD outbreak in the DRC and Uganda is a serious public health concern that requires a coordinated and comprehensive response. The rapid spread and high case fatality rate demand urgent action, and the WHO's reassessment of the risk and the launch of the joint continental response plan are welcome steps. However, more needs to be done to ensure an effective public health response, and the key to success lies in strengthening surveillance, increasing laboratory capacity, and implementing infection prevention and control measures.
