The epidemiology of poliomyelitis: enigmas surrounding its appearance, epidemicity, and disappearance.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011051:Poliomyelitis / Q000453:epidemiology*; D011054:Poliovirus Vaccine, Inactivated / Q000009:adverse effects; D012306:Risk; D012621:Seasons; D013997:Time Factors; D014481:United States
D011054:Poliovirus Vaccine, Inactivated