All of Nigeria is being threatened by a cholera outbreak that has killed at least 352 people in just three months.
The nation’s health ministry has recorded more than 6,400 cases of the disease since June.
Doctors have detected it in 12 of Nigeria’s 36 states and fear the disease could spread further.
“Epidemiological evidence indicates that the entire country is at risk,” a health ministry statement said.
Director of public health Dr Mike Anibueze said the northern states of Bauchi and Borno are the worst affected, with 139 deaths between them.
The spread of the disease is being blamed on heavy seasonal rains and the lack of access to clean water and proper sanitation.
The outbreak has also killed more than 200 people in neighbouring Cameroon with more than 2,000 confirmed cases.
Cholera is a water-borne disease which causes diarrhoea and severe dehydration.
It can lead to death if it is not detected and properly treated.