Borno State, Nigeria – A significant surge in suspected cholera cases across multiple local government areas in Borno State is placing immense pressure on the region's already strained health facilities. As of June 7, 2026, the Borno State Ministry of Health's Cholera Emergency Operations Center reported 8,457 cholera cases and 85 deaths, with a case fatality rate of 1.05%.

The outbreak is particularly severe in Maiduguri, Jere, Mafa, Konduga, Magumeri, Monguno, Kwaya Kusa, and Ngala, with suspected cases also emerging in Gwoza, Bama, Banki, and Mobbar local government areas. The situation is exacerbated by the onset of the rainy season, which increases the risk of water source contamination, and is compounded by factors such as displacement, overcrowding, and limited access to safe water and sanitation, which are persistent challenges in the region.

Health partners, including Médecins Sans Frontières (MSF), Save the Children, and CSO partner FHI360, are actively involved in the response. Three Cholera Treatment Centers (CTCs) are operational, with capacities ranging from 60 to 270 beds, supplemented by several Cholera Treatment Units (CTUs). UNICEF is supporting disinfection efforts, household hygiene promotion, and Case-Area Targeted Interventions (CATI) in affected areas, alongside providing essential medical supplies such as Ringer's Lactate and Oral Rehydration Salts (ORS).

The most affected age group comprises adults aged 21-50 years, followed by adolescents and younger children. Both males and females are reported to be equally affected.

Cholera is an acute diarrheal infection caused by the bacterium Vibrio cholerae, which spreads through contaminated food or water. Symptoms include severe watery diarrhea, vomiting, and rapid dehydration, which can be fatal if not treated promptly. Treatment focuses on rehydration through oral rehydration solutions or intravenous fluids, with antibiotics sometimes prescribed for severe cases.

The conflict in Borno State, stemming from nearly two decades of insurgency, has significantly weakened the health system, making communities more vulnerable to outbreaks like cholera. Inadequate water, sanitation, and hygiene (WASH) infrastructure remain key drivers of recurring outbreaks across Nigeria.