Cross-border cholera and Ebola outbreaks test regional coordination in parts of Africa

UNICEF and the World Health Organization say cholera and Ebola outbreaks spanning multiple countries are increasing pressure on cross-border surveillance and response coordination in parts of Africa.

Cholera outbreaks span key regional corridors

UNICEF said on Aug. 12 that active cholera outbreaks were affecting Democratic Republic of the Congo, Republic of the Congo, Nigeria, Chad, Cameroon and the Central African Republic, with transmission concentrated along the Lake Chad Basin and Congo River Basin.

The agency said Nigeria had recorded more than 50,000 cumulative cholera cases and 338 deaths since Jan. 1, while Democratic Republic of the Congo had reported more than 30,400 cases and nearly 700 deaths.

UNICEF linked the cholera spread to conflict, displacement, flooding and weak access to safe water and sanitation, factors that can complicate containment when people are moving across borders.

Children are among the hardest hit. UNICEF said children under 10 accounted for 44% of cholera cases in the Central African Republic, while nearly two-thirds of cases in Chad were among children under 15. In Cameroon, the median age of reported cholera cases was 10.

UNICEF said the current cholera pattern was centered on two major corridors, the Lake Chad Basin and the Congo River Basin, underscoring the need for coordination beyond country-level response.

Ebola response coordination expands in DRC and neighboring states

WHO said the Bundibugyo Ebola outbreak in Democratic Republic of the Congo had expanded to 54 health zones across six provinces by mid-August.

In May, health ministers from Democratic Republic of the Congo, Uganda and South Sudan met in Kampala and agreed to strengthen cross-border surveillance, contact tracing and harmonized reporting. WHO AFRO said the Central African Republic also hosted cross-border consultations on Aug. 14 over the risk posed by Bundibugyo virus disease.

Response efforts are underway. UNICEF said it is supporting affected countries through safe water provision, sanitation and hygiene services, surveillance support, treatment supplies and oral cholera vaccination campaigns. WHO and Africa CDC launched a joint continental Ebola response plan in June focused on surveillance, laboratory support, infection prevention and control, clinical care, logistics and cross-border coordination.

Médecins Sans Frontières and ALIMA have also reported Ebola response activities in Democratic Republic of the Congo, including support for treatment and prevention.

Funding and operational pressure remain key concerns

UNICEF has warned that additional funding is needed for the regional cholera response and has called for an additional $15 million over six months. OCHA has also reported emergency funding support in affected areas, including a $1 million CERF allocation for cholera response in the Central African Republic.

The outbreaks suggest neighboring border districts could face added pressure on laboratories, treatment centers, screening systems and public communication as governments try to detect imported cases early and avoid wider spread.

UNICEF and WHO reporting indicates that flooding, displacement and population movement remain important risk factors in several affected areas, adding urgency to containment efforts.

Key takeaways

• UNICEF says active cholera outbreaks are affecting six countries in West and Central Africa, especially along the Lake Chad and Congo River basins.
• WHO says the Bundibugyo Ebola outbreak in Democratic Republic of the Congo has expanded to 54 health zones across six provinces.
• Children are disproportionately affected in several cholera-hit countries.
• UNICEF links cholera transmission to conflict, displacement, flooding and weak access to safe water and sanitation.
• UNICEF has called for an additional $15 million for the regional cholera response, while OCHA reports emergency funding support including CERF allocations.

Sources

• UNICEF, “As cholera spreads across borders in West and Central Africa, UNICEF calls for urgent action to protect millions of children,” Aug. 12, 2026
• WHO, “Ebola disease caused by Bundibugyo virus - Democratic Republic of the Congo,” Disease Outbreak News 2026-DON615
• WHO, “Africa CDC and WHO launch joint continental Ebola response plan,” June 5, 2026
• WHO AFRO, “High-level ministerial meeting on cross-border coordination on the Ebola disease outbreak caused by Bundibugyo virus disease”
• WHO AFRO, “Central African Republic hosts cross-border consultation on the risk of Bundibugyo virus disease”
• OCHA, “West and Central Africa: Latest Events at a glance (14–20 July 2026)”
• MSF, “Ebola disease outbreak 2026: How MSF is responding”
• ALIMA, “Ebola outbreak in the DRC: ALIMA deploys a response to the Bundibugyo variant”