Bas-Uele is a province in northern Democratic Republic of the Congo. It borders the Central African Republic and includes the city of Buta. The name also appears as Bas-Uélé and Province du Bas-Uélé. Its position makes provincial health surveillance relevant to both domestic movement and an international border.

Public-health reporting divides Bas-Uele into 11 health zones, which lets investigators describe local transmission without treating the whole province as one outbreak area. Buta provides one reference point for that system and for detecting spread into the province. Bas-Uele's durable importance is therefore geographic and administrative: it links remote northern communities, provincial case finding and surveillance near the Central African Republic.

Key Issues

Ebola spread

Sporadic transmission reaches three zones

Bas-Uele joined DR Congo's Bundibugyo Ebola outbreak in August 2026, when a case with symptom onset on 4 August was reported in Buta. That detection made Bas-Uele the sixth affected province at the time.

By 18 October, WHO described transmission in Bas-Uele as sporadic but reported cases across three of the province's 11 health zones. Another zone remained at risk of expansion as neighbouring Nord-Ubangi confirmed its first two infections. Bas-Uele's task is to contain separated detections across a large northern province before they form a continuous chain.

Common Questions

Reference

Where is Bas-Uele province?

Bas-Uele is a province in northern Democratic Republic of the Congo, on the border with the Central African Republic.Source: UGPTN

Why is Bas-Uele being watched for Ebola spread?

WHO described transmission in Bas-Uele as sporadic, but several health zones had reported cases and further expansion remained possible.Source: World Health Organization

When did Ebola reach Bas-Uele?

A Bundibugyo Ebola case was reported in Buta in August 2026, bringing the outbreak into Bas-Uele.Source: WHO Regional Office for Africa

Source Material

Bundibugyo virus disease in the Democratic Republic of the Congo: continued transmission and risk of further spread Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo Bas-Uele, national coverage

How the World Sees Them

World Health Organization

The outbreak is serious but is not the next COVID.

IGWG co-chair Tovar da Silva Nunes

Member States have once again demonstrated their commitment to completing the PABS annex.

European Centre for Disease Prevention and Control

the possible involvement of local Anopheles mosquitoes cannot be excluded

Uganda's Ministry of Health

Unless they have other reasons, they should definitely lift the restrictions off the country.

Africa CDC

Transparency builds trust, accelerates delivery and saves lives.

Médecins Sans Frontières

a megafire, with multiple simultaneous focal points

DR Congo Ministry of Health

is evolving favourably

Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Updated 22 October 2026. Editorial standards.