title: A seroepidemiologic survey of Chagas' disease in two Paraguayan villages.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D014355:Chagas Disease / Q000175:diagnosis / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010239:Paraguay