[Results of investigations made in the past 4 years on the immunization of several Soviet populations with live poliomyelitis vaccine (Sabin type) adminstered orally].
D006801:Humans; D007114:Immunization; D011051:Poliomyelitis; D011055:Poliovirus Vaccine, Oral; D014611:Vaccination
D011055:Poliovirus Vaccine, Oral
POLIOMYELITIS; POLIOVIRUS VACCINE, ORAL