Leads from the MMWR. Pertussis--Maryland, 1982.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008396:Maryland; D014917:Whooping Cough / Q000453:epidemiology*