Ebola outbreak in Democratic Republic of Congo surpasses 1,000 cases, outpacing containment efforts

An Ebola outbreak in the Democratic Republic of Congo has surpassed 1,000 suspected cases and spread to Uganda. Caused by the rare Bundibugyo strain, for which there is no vaccine, the epidemic is outpacing containment efforts. A significant delay in detection allowed the virus to spread unchecked, and the response is now hampered by armed conflict, community distrust, and attacks on health centers in the region.

Outbreak scale in DRC

• ▪The outbreak has spread to neighboring Uganda, which had registered seven confirmed cases as of May 24, 2026
• ▪An Ebola outbreak in the Democratic Republic of Congo (DRC) has resulted in more than 1,000 suspected cases and hundreds of deaths
• ▪The World Health Organization (WHO) has declared the outbreak a "Public Health Emergency of International Concern" and raised the national risk level to "very high."
• ▪As of May 25, 2026, the World Health Organization reported over 900 suspected Ebola cases and 220 suspected deaths in the DRC

Bundibugyo strain characteristics

• ▪The Bundibugyo strain was first identified in 2007 and is considered less-studied than the Zaire strain, for which a vaccine exists
• ▪Past outbreaks of the Bundibugyo virus have had case fatality rates ranging from 30% to 50%
• ▪The outbreak is caused by the Bundibugyo virus, a rare strain of Ebola for which there is no licensed vaccine or specific treatment

Detection delays enabling spread

• ▪The WHO estimates there was a "critical four-week detection gap" that allowed the virus to spread unchecked for weeks before being identified
• ▪Delayed diagnosis occurred partly because the virus is the rarer Bundibugyo strain, and initial tests for the more common Zaire strain were negative
• ▪The first known patient showed symptoms on April 24, 2026, but the DRC government did not officially declare an outbreak until May 15, 2026

Transmission through funeral practices

• ▪Authorities in north-east DRC have banned funeral wakes of more than 50 people and are using armed guards for burials conducted by health workers
• ▪Traditional funeral practices in the region, which can involve mourners touching the deceased, have contributed to the spread of the virus
• ▪Community anger over burial protocols has led to incidents such as crowds attempting to reclaim bodies from treatment centers

American patient evacuations

• ▪Six other Americans considered high-risk contacts were moved to Europe for observation, with five going to Germany and one to the Czech Republic
• ▪The U.S. Department of Health and Human Services planned to ship an experimental antibody treatment to Germany for the exposed Americans
• ▪An American citizen, Dr. Peter Stafford, tested positive for Ebola in the DRC and was transferred to a hospital in Berlin, Germany for treatment

International containment measures

• ▪The World Health Organization released $3.9 million from its emergency fund to support response operations
• ▪Containment efforts are severely hampered by armed conflict, community distrust, and the displacement of people in eastern DRC
• ▪Angry residents have attacked health facilities, in some cases setting fire to treatment centers in Mongbwalu and Rwampara
• ▪The United States has imposed entry restrictions on non-citizens who have recently been in the DRC, Uganda, Congo, and South Sudan