TAWILA: In the cholera-stricken refugee camps of western Sudan, every second is infected by fear. Faster than a person can boil water over an open flame, the flies descend and everything is contaminated once more. Cholera is ripping through the camps of Tawila in Darfur, where hundreds of thousands of people have been left with nothing but the water they can boil, to serve as both disinfectant and medicine. “We mix lemon in the water when we have it and drink it as medicine,” said Mona Ibrahim, who has been living for two months in a hastily-erected camp in Tawila.

TAWILA: In the cholera-stricken refugee camps of western Sudan, every second is infected by fear. Faster than a person can boil water over an open flame, the flies descend and…

In cholera-ravaged refugee camps of western Sudan, fear spreads as swiftly as the deadly bacteria. Before water can even be boiled over open flames, swarms...