Ebola outbreak in DRC from Bundibugyo virus causes 223 deaths, no vaccine available

The World Health Organization (WHO) confirmed an outbreak of the Bundibugyo virus, a strain of Ebola, in the Ituri Province of the Democratic Republic of Congo (DRC) after four health-care workers died within four days in early May. As of May 24, the outbreak has resulted in 223 deaths and over 900 suspected cases. The case fatality rate for this strain averages 50%, and unlike the Zaire virus that caused previous major outbreaks (including the 2014–2016 West Africa epidemic with over 11,000 deaths), there is no approved vaccine for Bundibugyo. Scientists are working on potential vaccines, but the most advanced candidates remain months away from clinical trials. Additionally, no specific antiviral treatments exist, leaving health workers to rely solely on isolation, contact tracing, and safe burial practices to control the spread.

Containment efforts are severely hindered by local conditions. Three attacks on health-care facilities have occurred in recent weeks, including two treatment centers being burned down after relatives demanded the bodies of deceased patients. Such incidents forced 18 suspected cases back into the community. Misinformation is rampant, with some community members doubting the disease's existence. The outbreak originated in Mongbwalu, a high-traffic mining hub, and cases have spread to neighboring districts and Uganda (which reported seven confirmed cases and one death). The region suffers from ongoing armed conflict, poor infrastructure, and acute food insecurity affecting nearly 10 million people, making effective isolation and contact tracing “nearly impossible,” according to WHO Director-General Tedros. The dismantling of US aid programs has further weakened the response.