A Bundibugyo virus disease outbreak in the Democratic Republic of the Congo has grown into the largest of its kind ever recorded there, the World Health Organization said. As of July 30, 2026, the total confirmed case count stood at 3,605, with 1,587 confirmed deaths and a crude case fatality ratio of 44%.
The outbreak began in the Mongbwalu health zone in Ituri Province and has since spread across four additional provinces: North Kivu, South Kivu, Haut-Uélé, and Tshopo. WHO said 49 health zones are now affected. Epidemiological week 30 was the most recent complete reporting period, and it produced the highest weekly figures yet: 567 new cases and 296 deaths in a single week.
Insecurity, population displacement, and cross-border movements are complicating response operations and raising the risk of further geographic spread, WHO said. A regional preparedness and prioritization framework is guiding readiness across the African Region.
Uganda's Ministry of Health declared its own BVD outbreak over on July 28, 2026, after 42 days passed without a new confirmed locally transmitted case. The last such case had been discharged from care on June 16, 2026. A separate imported case in Uganda tested negative twice and left a treatment facility on July 16, 2026, before the outbreak-end declaration was issued.