Nigeria: Health Sector Cholera Outbreak Situation Report – Borno State, No. 05 (23 May 2026)

Country: Nigeria

Sources: Health Cluster, World Health Organization

Please refer to the attached file.

This Situation Report provides an update on the cholera outbreak response in Borno State, Nigeria, covering the period from 1 to 22 May 2026.

As of 22 May 2026, a cumulative 2,422 cholera cases and 24 associated deaths had been reported across seven LGAs, with a case fatality rate (CFR) of 1.0%. The report notes the continued geographic expansion of the outbreak, including newly affected Ngala LGA, and summarizes ongoing surveillance, laboratory testing, case management, WASH, risk communication, and multisectoral coordination activities. ...