Image provided by the United Nations Children's Fund (UNICEF) shows medical workers distrubuting relief supplies and blankets in an area where cases of cholera were reported after the attack of Hurricane Matthew, in Jeremie, Haiti, on Oct. 11, 2016. The UN Office for the Coordination of Humanitarian Affairs (OCHA) warned on Tuesday that 1.4 million Haitians were in need of humanitarian aid, including cholera vaccines, following the passage of Hurricane Matthew last week. (Xinhua/UNICEF)