A girl gestures during torrential rain in Chakmarkul, part of the refugee camp sheltering over 800,000 Rohingya refugees
A girl gestures during torrential rain in Chakmarkul, part of the refugee camp sheltering over 800,000 Rohingya refugees, Cox's Bazar, Bangladesh, July 4, 2018. Children are the most vulnerable to waterborn diseases, and there are more than 100,000 of them at risk in the flooding.