[Levels of immunity to poliomyelitis in a sample of school children of the city of São Paulo, Brazil].
D000293:Adolescent; D000914:Antibodies, Viral / Q000032:analysis*; D001938:Brazil; D002648:Child; D006801:Humans; D007109:Immunity; D017955:Poliovirus / Q000276:immunology*
D000914:Antibodies, Viral
Níveis de imunidade contra a poliomielite em uma amostra de escolares do Município de São Paulo, Brasil.