Q&A: Bundibugyo Ebola outbreak and PHEIC in DRC and Uganda (psu.edu)

• WHO declares PHEIC for Bundibugyo Ebola in DRC/Uganda.
• No specific vaccine; Zaire vaccine tested for cross-immunity.
• Contact tracing hampered by conflict and population mobility.

"The WHO declared the Ebola outbreak in the DRC and Uganda a Public Health Emergency of International Concern (PHEIC) in May 2026. The outbreak is caused by the rare Bundibugyo virus, with over 100 deaths and a case fatality rate of ~50%. No vaccine exists for this species; the Zaire vaccine is being tested for cross-protection. Response includes testing, contact tracing, and isolation, but is hampered by conflict and population mobility. Actual case numbers are believed higher."