Ebola Kills 500 in Congo as Outbreak Still Expanding, WHO Warns

The Ebola outbreak in the Democratic Republic of the Congo remains in an active expansion phase, with no sign of stabilization, the World Health Organization has warned. The death toll has surpassed 500, and the true scope of the outbreak is still being established.

Current Scale of the Outbreak

As of the latest WHO situation report, there are 1,561 confirmed cases of Ebola disease caused by the Bundibugyo virus across at least three eastern provinces of the DRC, with 506 deaths confirmed — representing a case fatality rate of roughly 32%. Nearly 254 people have recovered. The outbreak has also spread across the border into Uganda.

"We would like to say it is stabilising, but frankly, we cannot say it yet," said the WHO's representative in Congo. "The outbreak's true scale has not yet been fully established." Health authorities warn that cases continue to be registered daily across the affected provinces, and population movement in the region — driven in part by ongoing armed conflict — is facilitating the virus's spread.

A Dangerous Variant With No Vaccine

The Bundibugyo species of Ebola involved in this outbreak is particularly concerning because there is no approved vaccine or specific treatment for it. The vaccines and therapeutic treatments developed in response to previous Ebola outbreaks — most notably the highly effective rVSV-ZEBOV vaccine and mAb114 and REGN-EB3 antibody therapies — were certified specifically against the Zaire ebolavirus, a different species. Scientists are currently running trials of experimental candidates against the Bundibugyo strain, but none has yet received regulatory approval.

International Response

The WHO declared the outbreak a Public Health Emergency of International Concern (PHEIC) on May 16, 2026, triggering an international response. International aid organizations, including Médecins Sans Frontières (MSF), have deployed to the affected regions, and the DRC government has declared a public health emergency. Healthcare workers have also threatened industrial action in response to dangerous working conditions and inadequate supplies of personal protective equipment.

The UN's Office for the Coordination of Humanitarian Affairs has urged donors to significantly increase funding for the outbreak response. The Centers for Disease Control and Prevention in the United States has elevated its travel advisory for the affected provinces of the DRC to Level 3, recommending travelers avoid non-essential travel to the region.

Historical Context

The Bundibugyo Ebola virus was first identified during a 2007 outbreak in Uganda. This current outbreak, beginning in early 2026, is the largest ever recorded outbreak of this specific Ebola variant and one of the largest Ebola outbreaks ever recorded, regardless of species. The WHO describes it as one of the deadliest starts to any Ebola outbreak on record.