The CDC summary said Uganda had reported 19 confirmed cases and two confirmed deaths as of 12 June, plus one probable case and one probable death. The European Centre for Disease Prevention and Control said on 12 June that the outbreak caused by Bundibugyo virus was affecting both DRC and Uganda.
Table: Latest confirmed case and death counts carried by CDC
| Country | Reporting date | Confirmed cases | Confirmed deaths | Probable cases | Probable deaths |
|---|---|---|---|---|---|
| Democratic Republic of the Congo | 11 June 2026 | 689 | 139 | N/A | N/A |
| Uganda | 12 June 2026 | 19 | 2 | 1 | 1 |
Source: CDC situation summary, using DRC and Uganda ministry figures.
The World Health Organization's latest disease-outbreak notice gives an earlier official baseline. WHO said that, as of 6 June, DRC had reported 515 confirmed cases and 91 deaths, a case-fatality ratio of 17.7%, while Uganda had reported 19 confirmed cases and two deaths among confirmed cases.
WHO said the DRC increase since 29 May included 390 additional confirmed cases and 74 confirmed deaths. It said part of the increase reflected expanded testing and diagnostic capacity, including testing of a backlog of previously collected samples. That means the rise in reported confirmed cases should not be read as a same-day measure of new infections.
Bundibugyo virus is one of the Ebola viruses that can cause severe disease in humans. WHO's outbreak page says the 2026 outbreak was confirmed in DRC and Uganda in May and involves the Bundibugyo species, for which there is no vaccine or specific treatment, although work on candidate products is continuing.
ECDC says Ebola spreads through direct contact with the blood or other bodily fluids of infected people or animals, living or dead, and is not airborne. Its public guidance says people are generally not contagious before symptoms begin, which is why identifying symptomatic people, isolating suspected and confirmed cases and tracing contacts can reduce transmission.
WHO's 6 June notice shows why the outbreak remains difficult to measure. It said DRC cases had been reported from 25 health zones in Ituri, North Kivu and South Kivu, and that Ituri accounted for 94% of confirmed DRC cases at that point. WHO also said security incidents affecting health facilities were constraining access, disrupting surveillance and response work and increasing the risk of undetected transmission.