WHO Rapid Risk Assessment: Bundibugyo Virus Outbreak in Democratic Republic of the Congo and Uganda, May 2026 (cdn.who.int)

• 661 suspected cases, 160 deaths (CFR 24.2%) in DRC as of 21 May 2026
• 63 confirmed BVD cases, 4 confirmed deaths; spread to 16 health zones in 3 provinces
• Two confirmed imported cases in Uganda, one fatal; PHEIC declared
• No licensed vaccine or specific therapy; national risk very high

"On 22 May 2026, WHO published an updated rapid risk assessment for the Bundibugyo virus disease (BVD) outbreak in DRC with exportation to Uganda. As of 21 May, 661 suspected cases and 160 deaths (CFR 24.2%) were reported, including 63 confirmed cases. The outbreak has spread to 16 health zones across three provinces. The national risk was raised from high to very high, regional risk high, and global risk low. No licensed vaccine or specific therapeutics exist for BVD."