Healthcare World Water Day: In war, dirty water more dangerous to children than violence, says UNICEF Updated : March 22, 2019 03:12 PM IST In Yemen, which has had one of the worst cholera epidemics in recent history, a third of the cases were children under age 5, according to WHO. Diarrhoea-related illness is the second leading cause of death for all children under 5. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.