Cajuste Yanique lies on a cot while being treated Monday for cholera in a treatment facility in Cabaret, Haiti. Haitian officials say the disease has killed more than 1,300 people since the outbreak began last month and has been detected in eight of Haiti's 10 provinces. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images

A man helps his dengue fever-stricken daughter in Tegucigalpa, Honduras. In June, Honduran authorities declared a state of emergency due to the high rate of dengue cases reported around the country. Orlando Sierra/AFP hide caption

itoggle caption Orlando Sierra/AFP