At least 10 people in one country's province have died from cholera as the United Nations warn a further one billion people are at risk.
In South Africa's most populous province of Gauteng, health authorities confirmed the deaths of 10 people and that nearly 100 have visited hospitals with symptoms in Hammanskraal, an area north of the capital, Pretoria.
It added that 37 people were admitted in critical condition and the victims included a three-year-old child and nine adults.