title: The incidence of Trichinella spiralis in humans of Iowa.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D005007:Ethnology; D005260:Female; D006801:Humans; D007223:Infant; D007484:Iowa; D008297:Male; D008875:Middle Aged; D012723:Sex; D014235:Trichinellosis / Q000453:epidemiology*