Ebola Bundibugyo in Congo: 5,794 cases and 48.1% case fatality rate, epidemic reaches sixty health zones

The World Health Organization’s count, updated to August 26, 2026, attributes 5,794 confirmed Bundibugyo virus infections to the Congolese epidemic, against 2,786 deaths: the crude case fatality rate stands at 48.1%. The data are contained in the agency’s Disease Outbreak News and in the page dedicated to the emergency.

A clarification on sources, owed to the reader: both documents available are from the WHO. This is therefore a single origin, institutional and primary, without independent confirmation from other bodies. The fatality rate is defined as “crude” in the document itself, and the qualification matters: it is the ratio between deaths and confirmed cases recorded up to that date, not a measure of individual risk, and it can move in either direction as the count evolves and as the outcome of still-open cases becomes known.

Geographic extent

The previous bulletin, dated August 14, counted 54 health zones involved; twelve days later they had become 60, spread across six of the country’s twenty-six provinces: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu and Tshopo.

Indicator	Value as of August 26
Confirmed cases (DRC)	5,794
Deaths	2,786
Crude case fatality rate	48.1%
Health zones affected	60 (were 54 on August 14)
Provinces involved	6 of 26

Six more health zones in twelve days describe a front that is widening while remaining open: the geography of the epidemic, not just its numerical scale, is changing. The cumulative total also includes 20 cases in Uganda and one in France, plus two cases diagnosed in Congo and treated in Germany.

The strain, and why the species makes a difference

The epidemic was first detected in May 2026 and is, according to the WHO, the largest ever recorded in the country; it is also the second caused by the Bundibugyo virus after the one in 2012.

On this species the WHO writes that no vaccines or specific approved treatments exist, and that studies on promising candidates are underway. This is the technical point that explains the difference compared with other Ebola virus disease epidemics: authorized tools do not automatically cover all species of the genus. The newspaper limits itself to reporting what the agency has indicated: “studies underway” does not mean an available tool, and none of the research cited is presented by the WHO as concluded.

This publication does not provide behavioral, therapeutic or preventive guidance: operational recommendations are the responsibility of health authorities, and no updates as of August 31 appear in the excerpts available.

What we don’t know

We do not know the distribution of cases across the six provinces, nor which health zones were added between August 14 and August 26. We do not know how many people are under surveillance, what the coverage of contact tracing is, nor what the state of isolation capacities is in the newly affected zones. The available document does not report the weekly trend of new cases, which is the most useful indicator for understanding whether the curve is rising or slowing.

The next verifiable element will be the WHO’s next bulletin: the comparison between the two previous ones — 54 health zones on August 14, 60 on August 26 — is today the only public measure of the speed at which the epidemic is spreading across the territory.