Progress towards global poliomyelitis eradication, 2000.
D014943:Global Health; D006801:Humans; D017589:Immunization Programs; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control*; D011054:Poliovirus Vaccine, Inactivated
D011054:Poliovirus Vaccine, Inactivated