[Mass vaccination against poliomyelitis with a trivalent vaccine containing attenuated live viruses].
FERREIRA
E
E
D002690:Chlamydia Infections; D006801:Humans; D032541:Mass Vaccination; D011051:Poliomyelitis / Q000276:immunology*; D014612:Vaccines; D014780:Viruses
D014612:Vaccines
POLIOMYELITIS/immunology