[Poliomyelitis control program in Brasil: study of immunity levels].
D000914:Antibodies, Viral / Q000032:analysis; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D011051:Poliomyelitis / Q000517:prevention & control*; D011054:Poliovirus Vaccine, Inactivated; D014611:Vaccination
D000914:Antibodies, Viral; D011054:Poliovirus Vaccine, Inactivated
Programma antipoliomielítico en el Brasil: estudio de niveles de inmunidad.