Respiratory infections in the American tropics.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001838:Bolivia; D001990:Bronchiolitis, Viral / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007827:Laryngitis / Q000453:epidemiology; D009500:Neutralization Tests; D009527:Nicaragua; D009976:Orthomyxoviridae Infections / Q000453:epidemiology*; D010176:Panama; D018184:Paramyxoviridae Infections / Q000276:immunology; D011014:Pneumonia / Q000453:epidemiology; D012136:Respiratory Syncytial Viruses / Q000276:immunology; D012141:Respiratory Tract Infections / Q000453:epidemiology* / Q000276:immunology; D012229:Rhinovirus / Q000276:immunology; D014330:Tropical Medicine