Cholera outbreaks have been reported in nine of South Sudan's states
12 July 2014 Last updated at 03:29 BST
A cholera outbreak has spread to nine out of 10 states in South Sudan.
Thousands of people have been infected. If untreated, the disease can be fatal.
The outbreak also adds to a growing hunger crisis in the country. One charity warns that it is spreading rapidly, and is likely to get worse as heavy rains are predicted for the coming weeks.
Catarina Moh reports.