Polio eradication: the beginning of the end.
D014943:Global Health; D006801:Humans; D017589:Immunization Programs / Q000379:methods / Q000639:trends; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D023321:Poliovirus Vaccines / Q000627:therapeutic use*; D014944:World Health Organization / Q000458:organization & administration
D023321:Poliovirus Vaccines