The trial use of Sabin's attenuated type 1 poliovirus vaccine in a village in southern Arizina.
D004777:Environment; D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D017955:Poliovirus; D011055:Poliovirus Vaccine, Oral
D011055:Poliovirus Vaccine, Oral
POLIOMYELITIS/immunology