A large retrospective study using the GeoSentinel database observed the most frequent clinical syndromes among ill travelers returning from countries of South America as follows: dermatological disorders (264/1000 patients), acute diarrhea (219/1000 patients), systemic febrile illness (143/1000 patients), respiratory disorders (50/1000 patients). Information about South American malaria-risk areas can be found at the CDC website and information about dengue epidemiological activity in South America can be found at Healthmap. The childhood vaccination programs in South America are the average of developing countries in other continents, both in number of vaccines available and coverage. Yellow fever vaccine is part of the childhood schedule in children above one year of age in risk areas (areas where yellow fever has been detected in humans or monkeys) in Argentina, Brazil, Bolivia, Peru, Paraguay, Ecuador, and Colombia.