The Ebola outbreak spreading through the Democratic Republic of the Congo has become the largest in that country’s history and is developing quickly enough to raise fears that it could surpass the worst Ebola outbreak ever recorded. The current epidemic began in May 2026 and is being caused by the Bundibugyo species of Ebola virus, a particularly difficult strain to control because there is currently no approved vaccine or specific antiviral treatment for it.

As of October 19, Congo had recorded 9,637 confirmed cases and 4,646 confirmed deaths, giving the outbreak a case-fatality rate of roughly 48 percent. It has now reached 66 health zones in eight provinces. Ituri remains the center of the epidemic, accounting for nearly three-quarters of infections, but transmission has continued in North Kivu, Haut-Uélé and other provinces, while the virus recently spread into North Ubangi near the Central African Republic.

The 2026 Ebola outbreak is different from past incidents not because the virus has become more deadly but because human behavior has changed significantly.  In past outbreaks, most people in affected areas listened to health professionals and at least tried to enforce protective measures.  But this time large segments of the public have ignored health advice, with many even believing Ebola is a hoax thanks to social media videos claiming the virus isn’t real and the outbreak is a money-making scheme for health providers. In addition, the affected areas are in active conflict zones, adding the uncertainties of war into the mix.

What is clear is that its early growth has been exceptionally fast. The World Health Organization (WHO) reported that during its first three months the epidemic averaged about 90 confirmed cases per day, a substantially faster early pace than either the 2014–2016 West African outbreak or Congo’s 2018–2020 epidemic. If transmission rates continue at current levels, the historical West African total will come within reach in early 2027.

Several factors explain why containment has been so difficult. Eastern Congo already faces armed conflict, population displacement, weak health infrastructure and limited humanitarian access. Many transmission chains remain unidentified, while infected people sometimes reach treatment only after exposing family members, health workers and communities. The Bundibugyo strain also lacks the licensed vaccine that has helped control outbreaks caused by the Zaire species of Ebola.

Geographic spread may now be almost as concerning as the overall numbers. In October, a traveler from Congo carried Ebola through Uganda into Kenya, where he later died. Nigeria subsequently confirmed an infection associated with the widening regional outbreak, making it the fourth African country affected during the current wave.

That does not mean Ebola is likely to become a global pandemic. Ebola generally requires direct contact with infected bodily fluids and is much less easily transmitted than respiratory viruses such as COVID-19. WHO has continued to judge the greatest danger as being inside Congo and in neighboring countries rather than globally.

The biggest danger is not explosive worldwide transmission but a prolonged regional epidemic that health authorities cannot extinguish. As Ebola reaches additional provinces and crosses international borders, surveillance, contact tracing and safe isolation become progressively harder.