WHO steps up fight against poliomyelitis.
Ahmad
Khabir
K
D006801:Humans; D011051:Poliomyelitis / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage*; D014611:Vaccination / Q000379:methods; D014944:World Health Organization
D011055:Poliovirus Vaccine, Oral