Attenuated type 1 poliovirus vaccine; its capacity to infect and to spread from vaccinees within an institutional population.
D006268:Health Facilities; D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D017955:Poliovirus; D023321:Poliovirus Vaccines; D014613:Vaccines, Attenuated
D023321:Poliovirus Vaccines; D014613:Vaccines, Attenuated
POLIOMYELITIS/immunology