51 cholera cases registered in Havana
Cuba's health ministry has confirmed a cholera outbreak in Havana with 51 people infected - the biggest incidence of the disease there in decades.
An official statement said health workers had detected an increase in "watery diarrhoea" in some districts, which has been established as cholera, BBC says.
The source has been identified as a foodseller who caught cholera during a previous outbreak in eastern Cuba.
Doctors have been going house to house in Havana areas, checking for symptoms.