Community spread of orally administered attenuated poliovirus vaccine strains.
D030015:Enterovirus C, Human; D006801:Humans; D011051:Poliomyelitis; D017955:Poliovirus; D023321:Poliovirus Vaccines; D014613:Vaccines, Attenuated
D023321:Poliovirus Vaccines; D014613:Vaccines, Attenuated
POLIOMYELITIS VIRUSES