Vaccination against poliomyelitis with live virus vaccines. 6. Changes in Sabin type II oral vaccine virus after human passage.
D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D011055:Poliovirus Vaccine, Oral; D014611:Vaccination; D014613:Vaccines, Attenuated
D011055:Poliovirus Vaccine, Oral; D014613:Vaccines, Attenuated
POLIOMYELITIS/immunology