The humanitarian crisis from the civil war in Sudan is also exacerbating infections including cholera, and the bacterial disease has killed more than 300 people in the region, a World Health Official said on Friday.
WHO official Margaret Harris said in a media call that 11,327 cholera cases with 316 deaths had been reported and that dengue fever and meningitis infections were also on the rise.
"We expect to have more than has been reported," she added.
The northeastern African nation plunged into chaos in April last year when tensions between the military and the Rapid Support Forces turned into open fighting in the capital, Khartoum, before spreading across the country.