What Happened to Ebola Outbreaks in the Democratic Republic of Congo?

The Democratic Republic of Congo (DRC) has been the epicenter of Ebola virus disease since its discovery in 1976, experiencing 17 outbreaks to date. These recurrent epidemics highlight the persistent challenge of zoonotic spillover events and the complexities of public health response in a region often grappling with insecurity, population displacement, and weak health infrastructure.

One of the most devastating outbreaks occurred between August 2018 and June 2020 in the eastern provinces of North Kivu, South Kivu, and Ituri. This Kivu Ebola epidemic was the country's tenth and the second-largest in recorded history globally, resulting in 3,470 reported cases and 2,287 deaths. The response to this outbreak was severely hampered by ongoing armed conflict, community mistrust, and attacks on health workers, making contact tracing and safe burials extremely difficult. Despite these challenges, the deployment of an experimental vaccine (Ervebo, for the Zaire ebolavirus) played a crucial role in eventually bringing the outbreak under control.

Following the Kivu outbreak, the DRC continued to face smaller, localized Ebola flare-ups. In June-November 2020, an 11th outbreak in Equateur Province saw 130 confirmed cases and 55 deaths. This was followed by a 12th outbreak in North Kivu from February-May 2021 (12 cases, 6 deaths) and a flare-up in the same region from October-December 2021 (11 cases, 9 deaths). Another outbreak in Equateur Province from April-July 2022 resulted in five cases and five deaths, demonstrating rapid containment due to improved response mechanisms. A brief, single-case outbreak occurred in North Kivu in August-September 2022.

The 16th Ebola outbreak was declared in Kasai Province in September 2025, caused by the Zaire ebolavirus. This outbreak, which recorded 64 cases (53 confirmed, 11 probable) and 45 deaths, was declared over on December 1, 2025. Root causes for its delayed detection included inadequate ecological surveillance, weak community alert systems, and diagnostic delays.

Current Status (as of June 17, 2026): The DRC is currently experiencing its 17th Ebola outbreak, which was officially declared on May 15, 2026, in Ituri Province, northeastern DRC. This outbreak is particularly concerning as it is caused by the Bundibugyo virus, a rare strain for which there is currently no approved vaccine or specific treatment. The World Health Organization (WHO) declared this outbreak a Public Health Emergency of International Concern (PHEIC) on May 17, 2026, citing the rapid spread and the lack of existing medical countermeasures. As of June 16, 2026, the DRC Ministry of Health reported a total of 808 confirmed cases and 192 confirmed deaths, with Ituri being the most affected province. Cases have also been reported in North Kivu and South Kivu provinces, and cross-border spread has led to 19 confirmed cases and two deaths in Uganda.

The response is complicated by the challenging humanitarian context in eastern DRC, marked by ongoing armed conflict, mass displacement, and acute hunger, which hinder access for health workers and create conditions for rapid disease spread in overcrowded, unsanitary displacement camps. International efforts are underway, with organizations like CEPI fast-tracking the development of three investigational Bundibugyo vaccine candidates, and the EU allocating humanitarian funding. However, scientists warn that clinical trials for these vaccines could take several months. Community engagement is recognized as crucial for the success of the response, alongside strengthening surveillance, contact tracing, and clinical management.