MSF said 7,850 suspected cases had been recorded across 14 local government areas ​as of June 7, citing the state ministry ​of health, with infections rising sharply each day.

The outbreak ⁠is straining an already fragile healthcare system in a ​region at the heart of a 17-year Islamist insurgency, mass ​displacement and poor water and sanitation, raising the risk of wider spread if containment falters.

MSF, working with the state ministry of health, has ​set up a cholera treatment centre in the capital ​Maiduguri to support the response.

“Every day, we see more people arriving with ‌severe ⁠watery diarrhoea and dehydration, many of whom have travelled long distances to reach care,” said Bienfait Tombola, MSF project medical coordinator for the surge response in Maiduguri.

Cholera, a waterborne disease, thrives in areas lacking clean water and sanitation.

Authorities are planning a vaccination campaign, MSF ⁠said, ​as the aid group continues to ​scale up treatment, hygiene and surveillance to contain the outbreak.