[Oral poliovirus vaccination. Retrospect and perspectives].
D030015:Enterovirus C, Human; D006801:Humans; D011051:Poliomyelitis; D017955:Poliovirus; D011055:Poliovirus Vaccine, Oral; D014611:Vaccination
D011055:Poliovirus Vaccine, Oral
POLIOMYELITIS; POLIOVIRUS VACCINE, ORAL