On 15 May 2026, authorities in the Democratic Republic of Congo declared an Ebola outbreak after cases were confirmed in Ituri and North Kivu, with further cases later confirmed in South Kivu. The pathogen is the Bundibugyo strain, for which there is currently no WHO-approved vaccine or therapeutic. By 8 June, the national Institut National de Santé Publique reported 598 confirmed cases, 115 confirmed deaths, and a 19.2% case fatality rate across 26 health zones in three eastern provinces.
The outbreak is moving fast. In the 48 hours between 6 and 8 June alone, confirmed cases rose from 515 to 598 and confirmed deaths from 91 to 115. Confirmed figures almost certainly understate true transmission: limited testing capacity and a shortage of Bundibugyo-specific diagnostic reagents delay confirmation, and by 22 May the Centre for Global Infectious Disease Analysis had estimated up to 1,000 potential cases. On 9 June, the Emergency Relief Coordinator activated the IASC System-Wide Scale-Up protocol for an initial three months.
This is not a health emergency in isolation. It is layered onto one of the world's most severe protracted crises: eastern DRC carries an INFORM Risk score of 8.0 ("Very High") and a Severity score of 9.1 ("Crisis") on the PRISM platform, with active conflict, mass displacement, and a concurrent cholera outbreak all constraining the response.
Cases and deaths are climbing in step
The three consecutive daily snapshots in early June show the outbreak accelerating rather than plateauing. National confirmed cases rose from 60 by 20 May to 515 by 6 June, then to 598 by 8 June. Crucially, deaths are not lagging behind: the apparent case fatality rate climbed from 17.7% to 19.2% across those same three June reports, a sign that detection is still catching up with severe and fatal cases rather than with milder ones.
Ituri is the epicentre, but the map is widening
The outbreak is overwhelmingly concentrated in Ituri province, which holds 563 of 598 confirmed cases (94%) and 92 of 115 deaths. Within Ituri, three health zones carry most of the burden: Bunia (163 cases), Rwampara (122), and Mongbwalu (114). Bunia functions as a major commercial and transport hub linking Ituri with North Kivu, other eastern provinces, and Uganda, which raises the risk of onward transmission along mobility corridors.
Beyond Ituri, the geographic signal is what worries responders most. North Kivu has 32 confirmed cases spread across seven zones, including Goma, a city of roughly 750,000 people hosting over 333,000 internally displaced persons. South Kivu has recorded a case in the Miti-Murhesa zone on the outskirts of Bukavu, a city of nearly 1.5 million, in a patient who had travelled from Tshopo province through Kisangani, which suggests undetected transmission chains well beyond the current case map.
The case fatality rate hides an even sharper local picture
A 19.2% national case fatality rate is severe, but the average flattens dangerous local variation. Plotting each health zone's confirmed cases against its case fatality rate shows that the largest clusters are not always the deadliest, and vice versa. Mongbwalu stands out: 114 confirmed cases at a 35.1% fatality rate, the deadliest large cluster in the outbreak. Several smaller North Kivu zones report fatality rates above 65%, reflecting both late detection and the absence of any strain-specific treatment.
A containment effort layered onto a war
With no pharmaceutical containment available, the response depends on the classic non-pharmaceutical toolkit: surveillance, early isolation, supportive care, infection prevention, and safe and dignified burials. Each of these is harder in eastern DRC than almost anywhere else. The IASC activated its System-Wide Scale-Up on 9 June, and two 60-bed Ebola treatment centres are being established in Goma, but capacity may fall short as suspected cases rise.
Three dynamics from past outbreaks are already reappearing. Community mistrust, persistent in the region since the 2018 to 2020 epidemic, has resurfaced: on 21 May, protesters set fire to a health facility in Rwampara after authorities prevented a family from accessing a deceased relative's body, and six patients including three confirmed cases escaped. Funeral practices have driven rapid spread, with authorities linking early transmission to the burial of a nurse in Mongbwalu. And conflict is diverting state capacity: ADF activity in Ituri and M23 control across parts of North and South Kivu are likely to intensify as government attention shifts to the Ebola response.
An outbreak inside one of the world's worst emergencies
What makes this outbreak so dangerous is the ground it has landed on. PRISM's live country indicators for DRC describe a system already at the edge of its coping capacity before the first Ebola case was confirmed.
The platform also records DRC's humanitarian access at level 5, the most severe rating, 27.7 million people in acute food insecurity (IPC Phase 3 or worse, 24% of the population), and 3,088 political-violence events with 5,222 fatalities in the past twelve months. Only 11.9% of the population has safely managed drinking water, a structural barrier to the hand hygiene and safe waste disposal that interrupt Ebola transmission.
The next four weeks
- ACAPS Briefing Note: DRC Ebola outbreak, 22 May 2026, the primary situation analysis behind this update.
- WHO Disease Outbreak News, for the official confirmed-case record.
- PRISM DRC country analysis, for the live INFORM, funding, conflict and food-security context.
"The convergence of late case identification, insufficient contact tracing capacity, population mobility, insecurity constraining detection, and limited access to healthcare indicates that actual transmission levels likely exceed confirmed case counts."
— ACAPS Briefing Note, DRC Ebola outbreak, 22 May 2026