Some epidemiological data collected from the epidemic of poliomyelitis in 1956.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009426:Netherlands; D011051:Poliomyelitis / Q000453:epidemiology*; D011247:Pregnancy