On 16 May 2026, following laboratory confirmation of Bundibugyo virus disease (BVD), the WHO Director-General determined that the outbreak constituted a Public Health Emergency of International Concern (PHEIC) under the International Health Regulations (2005). As of 31 May 2026, the Democratic Republic of the Congo has reported 330 laboratory-confirmed cases, 116 suspected cases, and 49 confirmed deaths (case-fatality ratio approximately 15%) across health zones in Ituri (Bunia, Rwampara, Nyankunde, Mongbwalu) and North Kivu provinces. Four independent importations have been observed abroad: three to Kampala, Uganda (two travelers detected on 15–16 May plus one retrospective case traced to 14 May travel) and one travel-related case in Bukavu, South Kivu. The two additional Kampala cases that bring the local total to five are contacts of the traveling cases rather than independent importations.
The Epistorm center at Northeastern University, supported by the CDC CFA Insight Net program, is providing quantitative risk assessments and analytical outputs in response to this outbreak. This hub aggregates all reports and analyses produced and is updated as the situation evolves.