Médecins Sans Frontières is responding to an active Ebola outbreak in the Democratic Republic of Congo caused by the Bundibugyo virus, which has no approved vaccine or treatment. As of May 19, 2026, authorities reported over 500 suspected cases and more than 130 deaths, with confirmed cases in North Kivu province including the city of Goma, and two confirmed cases across the border in Uganda. The outbreak is complicated by ongoing regional conflict, displacement, and limited diagnostic capacity.