A community study of respiratory infections in the tropics. I. Description of the community and observations on the activity of certain respiratory agents.
D000914:Antibodies, Viral / Q000032:analysis; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D010177:Panama Canal Zone / Q000453:epidemiology; D015995:Prevalence; D012141:Respiratory Tract Infections / Q000453:epidemiology* / Q000276:immunology; D012621:Seasons; D014329:Tropical Climate
D000914:Antibodies, Viral