Threat assessment brief – Ebola disease outbreak caused by Bundibugyo virus – Democratic Republic of the Congo and Uganda – 2026

On 15 May 2026, Africa CDC reported an outbreak of Ebola disease in Ituri Province, DRC. Laboratory analysis at Institut National de Recherche Biomedicale of DRC identified Bundibugyo virus (BDBV). BDBV disease is a rare disease but can cause outbreaks with high case fatality rates. Considering the available information, complicated context and the uncertainties on the epidemiological information WHO declared a Public Health Emergency of International Concern on 17 May 2026. Africa CDC declared a Public Health Emergency of Continental Security on 18 May 2026.