Ebola in Congo: 5,290 confirmed cases and 2,516 deaths as of August 20

This newspaper has been following the Bundibugyo virus outbreak in the Democratic Republic of the Congo for weeks. The most recent update available is from the ECDC, built on data from the Congolese Ministry of Health: as of August 20, 2026, there are 5,290 confirmed cases and 2,516 related deaths, with 837 patients hospitalized in isolation.

The increase

Compared to the previous report, there are 81 new confirmed cases and 40 deaths. The new reports come from three areas: Ituri, North Kivu and Haut-Uélé.

Indicator	Value as of August 20	Change from previous report
Confirmed cases	5,290	+81
Related deaths	2,516	+40
Patients in isolation	837	not indicated

The ratio between the two increases — 40 deaths for every 81 new confirmed cases — should not be read as a case fatality rate: deaths in a given period largely refer to cases reported previously. The case fatality rate calculated by the WHO as of August 12 was 46.8%, unadjusted, and at that date the epidemic had spread to 54 health zones across six provinces.

The WHO assessment

WHO Director-General Tedros Adhanom Ghebreyesus stated: “This is now the second largest Ebola epidemic ever recorded” (transl. from English). The organization had declared the outbreak a public health emergency of international concern on May 17, 2026.

The declaration of an international emergency is not a judgment on the clinical severity of individual cases: it is a legal instrument that triggers notification and coordination obligations between States, which the WHO maintains or revokes based on periodic assessments.

Obstacles to the response

The Disease Outbreak News document records an element that directly affects containment capacity: since the emergency declaration, 12 attacks on health facilities have been counted, which have hindered the response.

In a hemorrhagic fever epidemic, contact tracing and early isolation are the two levers that determine the curve’s trajectory. Every interruption in the activity of a treatment center does not produce a linear delay but a loss of contact chains, which reappear in the data weeks later.

Vaccines and treatments: the state of the art

For Bundibugyo virus there are no approved specific vaccines or treatments; the ECDC reports that tests are underway on candidates described as promising. This is all that can be stated today: no candidate under trial is an available therapy, and the results of ongoing studies are not, by definition, established results. The trial phases, samples, and outcomes of individual protocols are not specified in the material available, and this newspaper does not infer them.

What we don’t know

The two agencies publish on different schedules, and this produces misalignments: fatality and geographic extent are updated by the WHO as of August 12, while the case and death count is from the ECDC as of August 20. We do not publish comparisons between the two dates as if they measured the same moment.

Not available in the material consulted are the number of infected healthcare workers, the breakdown of cases by health zone updated to August 20, or data on contact-tracing coverage. The next verifiable update will be the ECDC’s subsequent epidemiological report.