Officials are investigating an outbreak of diarrhoea in earthquake-hit Haiti.
Reports say up to 50 people have died after suffering acute fever, vomiting and diarrhoea. Many more with similar symptoms have been admitted to hospitals north of the capital.
A senior UN health official told the BBC it was not clear what caused the outbreak. Test results are expected later on Thursday.
January’s quake killed some 250,000 people and left 1.5 million homeless.
Jessica Du Plessis, from the UN’s humanitarian affairs agency, said the outbreak was centralised on the northern half of Haiti. She told the BBC there were about 300 people showing symptoms in a few hospitals and clinics in that area.
A doctor with the Pan American Health Organization, a regional branch of the UN’s World Health Organization, said little was known of the outbreak beyond “a high incidence of diarrhoea”.
“Nothing can be verified at the moment. We have no numbers, no epidemiological data,” said Dr Michel Thieren.
He said the symptoms can be associated with a number of underlying diseases.
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