El Niño and its impact on health.
D002489:Central America / Q000453:epidemiology; D002771:Cholera / Q000453:epidemiology; D003140:Communicable Disease Control / Q000458:organization & administration*; D003141:Communicable Diseases / Q000453:epidemiology*; D003153:Community Health Services / Q000458:organization & administration; D004190:Disasters; D004196:Disease Outbreaks / Q000517:prevention & control*; D006298:Health Services Administration / Q000458:organization & administration; D006801:Humans; D008288:Malaria / Q000453:epidemiology; D013020:South America / Q000453:epidemiology; D014887:Weather