The Democratic Republic of Congo (DRC) is currently experiencing a concerning and fast-evolving outbreak of Bundibugyo virus disease (BVD), a severe form of Ebola. As of early July 2026, the nation has reported a substantial increase in confirmed cases and related deaths, prompting intensive public health responses both nationally and internationally. Neighboring Uganda has also identified cases, primarily linked to cross-border transmission, while a unique case involving a medical professional returning from the DRC has been confirmed in France, underscoring the potential for broader spread. ## Understanding Bundibugyo Virus Disease Bundibugyo virus disease is one of the distinct types of Ebola, caused specifically by the Bundibugyo virus, a member of the *Orthoebolavirus* family. This illness is classified as a *zoonotic disease*, meaning it typically originates in animals before spreading to humans. Scientific investigations strongly suggest that fruit bats are the natural carriers, or 'reservoirs,' for the virus in the environment. Human infections are believed to occur through close contact with the bodily fluids or tissues of infected wild animals, such as bats or certain non-human primates. Once a person is infected, the virus can then spread very effectively from one person to another. This person-to-person transmission primarily happens through direct contact with blood, secretions, organs, or other bodily fluids from infected individuals, or by touching surfaces and objects contaminated with these fluids. The risk of transmission is particularly high in healthcare settings when proper infection prevention and control (IPC) measures are not strictly followed, and during traditional burial practices that involve direct contact with the deceased. ## Recognizing the Symptoms and Diagnosing BVD The incubation period for Bundibugyo virus disease, which is the time between exposure to the virus and the appearance of symptoms, can range from two to 21 days. It's important to note that individuals are not considered infectious until they actually begin to show symptoms. The early signs of BVD can be quite non-specific, often resembling other common illnesses, making initial diagnosis challenging. These initial symptoms may include fever, overwhelming fatigue, muscle aches, headache, and a sore throat. As the disease progresses, these symptoms can worsen, leading to severe gastrointestinal issues like vomiting and diarrhea, organ dysfunction, and, in some cases, internal or external bleeding (haemorrhagic manifestations). In past Bundibugyo outbreaks, the mortality rate, or case fatality ratio (CFR), has been significant, ranging from 30% to 50%. The current outbreak in the DRC shows a CFR of around 30.9%. Because its early symptoms mimic other prevalent diseases like malaria, definitive diagnosis of BVD requires laboratory confirmation using specific tests such as Polymerase Chain Reaction (PCR) or antigen/antibody-based assays. Rapid and accurate diagnosis is critical for isolating patients quickly and preventing further spread. ## The Outbreak in the Democratic Republic of Congo: Challenges and Impact The situation in the Democratic Republic of Congo remains a serious concern, with the outbreak continuing to grow rapidly. As of July 1, 2026, the DRC had reported a cumulative total of 1460 confirmed cases, resulting in 452 deaths. This sharp increase in figures, with an additional 564 confirmed cases and 220 deaths since mid-June, is partly attributed to expanded surveillance activities and improved testing capabilities across the country. The disease has now affected 36 health zones across Ituri, North Kivu, and South Kivu provinces. Ituri Province bears the heaviest burden, accounting for more than 91% of all confirmed cases and 84% of reported deaths. Within Ituri, specific health zones like Bunia, Rwampara, and Mongbwalu have seen the highest numbers. Notably, 102 healthcare and care workers have been infected, with 25 fatalities among them, highlighting the critical risks faced by frontline responders. Compounding these challenges, the outbreak is unfolding in a highly complex environment marked by ongoing humanitarian crises and armed conflict. This instability leads to highly mobile and frequently displaced populations who often lack access to fundamental services such as food, clean water, adequate shelter, and healthcare. Overcrowded internally displaced persons (IDP) camps create conditions ripe for disease transmission. Furthermore, security incidents increasingly disrupt health facilities and obstruct the work of response teams, hindering surveillance and critical intervention activities, and raising the risk of undetected spread. Effective response strategies in this context heavily rely on leadership from local communities and deeply rooted community engagement efforts. ## Uganda's Proactive Response and Containment Uganda has also been impacted by the BVD outbreak, though its situation appears more contained. As of July 2, 2026, the country reported a total of 20 confirmed cases, including two deaths from imported cases, and one probable case who died. Importantly, Uganda has not reported any new cases since June 21, 2026. Of the confirmed cases, 15 were imported from the DRC, and five were secondary infections among contacts or healthcare workers with direct links to these imported cases. The cases were concentrated in the Kampala Metropolitan Area, specifically in the Kampala and Wakiso districts. Crucially, there has been no documented evidence of community transmission within Uganda. The primary risks of exposure have been identified within healthcare settings and through cross-border movements. Ugandan authorities, in collaboration with WHO and partners, have implemented robust contact tracing efforts, with 821 contacts successfully completing their 21-day follow-up period, indicating strong containment measures. ## The International Dimension: A Case in France The global interconnectedness of health was starkly highlighted when French authorities reported a laboratory-confirmed case of Bundibugyo virus disease on June 24, 2026. The patient, a middle-aged medical doctor, had recently returned from a five-week deployment in Ituri Province, DRC, where they were involved in caring for BVD patients. Upon arrival at Charles de Gaulle Airport, the doctor proactively reported symptoms to airport health officials, leading to immediate isolation and transfer to a specialized high-containment medical facility. While clinically stable and not experiencing severe symptoms like fever or haemorrhage during travel, PCR testing confirmed the presence of Bundibugyo virus. Comprehensive contact tracing has been initiated in both the Democratic Republic of Congo (specifically Kinshasa) and France to identify and monitor any potential exposures. ## Critical Public Health Measures in Action In response to the escalating crisis, health authorities in both the Democratic Republic of Congo and Uganda, working closely with the World Health Organization (WHO) and other international partners, are implementing an extensive array of public health interventions. These measures include a continental response plan, efforts to engage donors, and the mobilization of additional resources to bridge crucial funding gaps and maintain sustained response operations in affected and at-risk areas. Key strategies encompass rapid case identification, prompt isolation and clinical care for infected individuals, meticulous contact tracing to identify and monitor anyone who may have been exposed, and ensuring safe and dignified burial practices to prevent further transmission from deceased individuals. A strong emphasis is also placed on community engagement to build trust, promote understanding of the disease, and encourage adherence to public health guidelines, especially since there are currently no approved vaccines or specific antiviral treatments for BVD. ## Global Risk Assessment and WHO's Recommendations On June 6, 2026, WHO updated its risk assessment for the Bundibugyo virus disease outbreak. The risk within the Democratic Republic of Congo remains categorized as “very high” due to continuous transmission, the disease's expansion into new geographical areas, and the increased potential for further national and regional spread. For Uganda, the risk is assessed as “high” given the confirmed cross-border transmission via imported cases and ongoing epidemiological links along the eastern DRC–western Uganda corridor, a region historically affected by various Ebola outbreaks. Countries sharing land borders with the DRC and Uganda are also considered to be at “high risk” due to significant population movement related to trade and mining, coupled with varied levels of preparedness and experience in responding to BVD. Fortunately, the risk for the rest of the African region and at the global level remains low. Despite the significant challenges, WHO advises against imposing any restrictions on travel to or trade with the Democratic Republic of Congo or Uganda. This recommendation is based on currently available information and aims to avoid exacerbating humanitarian and economic strains. WHO continues to monitor travel and trade measures closely and issues temporary recommendations for coordinated outbreak control, enhanced cross-border collaboration, and sustained surveillance and preparedness to prevent wider regional spread. ## The Path Forward: Collaborative Efforts for Control Controlling the Bundibugyo virus disease outbreak demands sustained, collaborative efforts from national governments, international health organizations, and local communities. Research into candidate vaccines and therapeutics for BVD is ongoing, with expert groups like the Strategic Advisory Group of Experts on Immunization (SAGE) convened by WHO actively evaluating potential interventions. The complex environment in the DRC, marked by conflict and population displacement, underscores the vital need for response efforts to be locally led and anchored in strong community engagement. By enhancing surveillance, bolstering diagnostic capacities, ensuring robust infection prevention and control, and fostering public trust, the international community aims to contain this serious health threat and protect vulnerable populations.