DRC Ebola outbreak now fastest-growing in the virus's history
BiosecurityConfirmed cases have reached 3,360 across five provinces in the country's east, with 1,487 deaths recorded, an overall case fatality rate of roughly 45%. The trajectory has startled health authorities: CNN reported that the outbreak has grown into the second-largest on record, noting that "in just over two months, cases in this outbreak have surpassed the total number reported in another historic Ebola outbreak in the DRC that lasted nearly two years, from August 2018 to June 2020."
The outbreak, first reported in Ituri Province on 14 May 2026, is the 17th Ebola outbreak in the DRC's history and began "only five months after the end of the previous outbreak," according to tracking by Wikipedia's epidemic archive. Wessam Mankoula, head of emergency preparedness and response for the Africa Centres for Disease Control and Prevention, put the speed in stark historical context in July, comparing it to the deadliest Ebola outbreak, in 2013-16 in West Africa, when there were 994 cases in the first six weeks, while there have been 1,596 in the current one. He added that "the virus is still ahead of our response. It's moving faster than deploying the resources to control the situation." WHO's Chikwe Ihekweazu, Executive Director of the agency's Health Emergencies Programme, was blunter still, telling reporters in Geneva that "we've seen the fastest growth in a single month since the outbreak started and of all the Ebola outbreaks that we have managed."
Congolese health officials say the response has been badly hampered by ongoing conflict in the affected areas, which complicates access for health workers and vaccination efforts. WHO itself has described the setting as "a challenging context: humanitarian crisis and a remote and densely populated area, combined with insecurity and high population and trade movements." Roughly 80% of new infections are reportedly occurring outside known contact-tracing chains, which has fuelled concern about undetected spread in communities that never reach treatment facilities.
A vaccine targeting the Bundibugyo strain responsible for this outbreak may still be months away. Unlike the Zaire strain behind the 2018-2020 DRC outbreak and the 2014-2016 West Africa epidemic, for which two licensed vaccines (Ervebo and the Mvabea/Zabdeno regimen) already exist, Bundibugyo has never had an approved vaccine or treatment despite being identified nearly two decades ago. Johns Hopkins researchers note that three vaccine candidates for the Bundibugyo virus are in development, but it's not clear if or when they can be deployed in the current outbreak. Clinical trials of the antiviral remdesivir and the experimental drug MBP134 began in the DRC on 12 July, and Oxford University has been cleared to begin Phase 1 trials of a candidate vaccine, but none of these tools is likely to be ready in time to shape the current wave. The CDC has separately warned that in a worst-case scenario, the epidemic could rival the 2014-2016 West Africa outbreak that resulted in over 28,000 cases and more than 11,000 deaths. The combination of rapid growth, high fatality, active conflict and the absence of a ready vaccine marks a significant deterioration from earlier Ebola outbreaks, which have generally been slower-moving and more geographically contained even when lethal.