Borno State, Nigeria – A significant surge in cholera cases is overwhelming health facilities in Borno State, Nigeria, with thousands falling ill and stretching response capacities to their limits. As of June 7, 2026, the Borno State Ministry of Health had recorded 7,850 suspected cholera cases across 14 Local Government Areas (LGAs) and 50 wards, resulting in 74 reported deaths.

The outbreak, which began in early May 2026, is particularly challenging due to the existing fragility of the region's health systems, exacerbated by nearly two decades of conflict with the Boko Haram insurgent group.

Médecins Sans Frontières (MSF), also known as Doctors Without Borders, is working in collaboration with the Borno State Ministry of Health to manage the escalating crisis. MSF established a Cholera Treatment Centre (CTC) in the Ngarannam area of Maiduguri on May 7, 2026. Initially equipped with 121 beds, the facility has since been expanded to 271 beds to accommodate the rapidly increasing number of patients. Additionally, a new 20-bed Cholera Treatment Unit (CTU) has been opened in the Dalaram area of Maiduguri.

MSF reported treating a total of 7,439 patients at its facilities by June 7, with an average of 230 admissions per day. The highest number of admissions in a single day was recorded on June 5, 2026, when over 500 patients presented with acute watery diarrhoea. Many patients arrive at treatment centers in critical condition, often after traveling long distances to seek care.

The outbreak is occurring in communities with limited access to clean water and sanitation services, and inadequate hygiene infrastructure, which are conducive to the spread of waterborne diseases. Open defecation is also cited as a contributing factor to the worsening situation.

Response efforts include training healthcare workers, establishing oral rehydration points, conducting health promotion activities, supporting water and sanitation initiatives (including water chlorination), and strengthening referral pathways. Health authorities are also planning a cholera vaccination campaign to help curb transmission.

Despite these efforts, the scale and speed of the surge continue to pose significant challenges, underscoring the need for continued support and long-term investments in water, sanitation, and hygiene infrastructure to prevent recurring outbreaks.