World Health Organization Director-General Dr. Tedros Adhanom Ghebreyesus said an Ebola outbreak in eastern Democratic Republic of Congo is likely to expand.
The situation is critical because the virus circulated undetected for weeks before health officials identified the strain, allowing the disease to spread through the population.
Dr. Tedros said that while confirmed cases number several dozen [3], the broader impact is much larger. He said there are almost 600 suspected cases and 139 suspected deaths [1, 2]. Some reports place the suspected death toll at 131 or higher [5], but the WHO said the figure is closer to 139 [2].
"The toll is expected to climb, as the virus circulated undetected for weeks before being identified," Dr. Tedros said [4].
The outbreak involves the Bundibugyo strain of the virus. This specific variant presents a significant challenge for medical responders because there is currently no available vaccine for this strain [3].
Health officials are working to contain the spread in the eastern region of the DRC. The delay in detection has created a gap in the response timeline, meaning many individuals may have been exposed before testing and isolation protocols were established.
Because the virus was not identified immediately, the WHO said it expects the number of suspected cases to rise as more people seek medical attention or as community tracing reveals new clusters of infection. The lack of a vaccine means the response must rely on supportive care, and rigorous contact tracing, to prevent further fatalities.
“The toll is expected to climb, as the virus circulated undetected for weeks before being identified.”
The undetected spread of the Bundibugyo strain creates a dual crisis: a lack of early intervention and the absence of a targeted vaccine. This forces health officials to rely on containment and palliative care, which typically results in higher mortality rates compared to outbreaks where vaccines are deployed rapidly.
