Transmission of wild poliovirus type 2--apparent global interruption.
D014943:Global Health; D006801:Humans; D017589:Immunization Programs; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control*; D017955:Poliovirus; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage; D011159:Population Surveillance; D014944:World Health Organization
D011055:Poliovirus Vaccine, Oral