The fastest-growing Ebola outbreak in history has spread to two new health zones in eastern Congo, bringing the total number of affected areas to 60, according to government figures published on Friday. The outbreak has recorded 5,794 confirmed cases and 2,786 deaths, spreading at a speed that outpaces tracking and containment efforts.
North Kivu Case Fatality Rates Spike Amid Delays
The newly affected areas are Biena and Manguredjipa, located in Congo’s North Kivu province. According to data from Congo’s Ministry of Health, the case fatality rate in these specific zones is much higher than the overall rate of 48%. Officials attribute this spike largely to delayed response efforts in the region.
The outbreak is advancing under severe operational hurdles. Insecurity, civilian displacement, a health workers’ strike, and intense population movements continue to hinder containment. Most cases and deaths are occurring within communities rather than inside monitored contact networks, according to official reports.
Vaccination Rollout and Vaccine Challenges
Congo launched vaccinations for health workers and other front-line staff using the Ervebo vaccine. While effective against past outbreaks caused by the Zaire virus strain, Ervebo targets a different type than the rare Bundibugyo virus driving the current event. Clinical trials are underway to find a licensed vaccine for the Bundibugyo strain, which currently lacks approved vaccines or treatments.
Northeastern Ituri province remains the hardest hit, accounting for more than 83% of all recorded cases. Public health measures—including limited public gatherings, social distancing, and airport closures—have disrupted daily life across six affected provinces. Advocacy groups emphasize that building community trust remains essential as local resistance and rebel violence complicate sanitary measures.
Did You Know?
Although the current outbreak was formally declared in mid-May, public health officials believe the virus had been circulating undetected since February.

Cross-Border Spillover Risks to Neighbors
While neighboring Uganda declared itself free of Ebola last month, the World Health Organization warns that cross-border risks remain high. WHO expert Marie Roseline Belizaire noted on Wednesday that the Central African Republic is currently at the highest risk for spillover, followed closely by South Sudan, as eastern Congo’s outbreak expands toward border regions.
The World Health Organization maintains that the outbreak remains out of control. It is on track to surpass the 2014–2016 West Africa Ebola outbreak—the deadliest on record, which killed more than 11,000 people primarily across Guinea, Liberia, and Sierra Leone.
Frequently Asked Questions
Which new health zones have been affected in eastern Congo?
The Biena and Manguredjipa health zones in North Kivu province are the latest areas affected, bringing the total number of impacted zones to 60.
What virus strain is causing the current outbreak?
The outbreak is driven by the rare Bundibugyo virus strain, which currently has no approved vaccines or specific treatments.
How many total cases and deaths have been reported?
Congo’s Ministry of Health has recorded 5,794 confirmed cases and 2,786 deaths, with an overall case fatality rate of 48%.
Which neighboring countries face the highest spillover risk?
According to the World Health Organization, the Central African Republic faces the highest risk of cross-border spillover, followed by South Sudan.
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