Poliomyelitis epidemiology and control.
D002648:Child; D002675:Child, Preschool; D003906:Developing Countries; D004196:Disease Outbreaks / Q000266:history; D004739:England; D005260:Female; D049671:History, 18th Century; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral; D012959:Socioeconomic Factors; D014852:Wales
D011055:Poliovirus Vaccine, Oral