Further immunological and clinical studies on the importance of a neurotropic streptococcus in the etiology of epidemic poliomyelitis and its relation to the natural virus.
D035843:Biomedical Research; D006801:Humans; D011051:Poliomyelitis / Q000209:etiology*; D017955:Poliovirus; D013291:Streptococcus
POLIOMYELITIS VIRUS; POLIOMYELITIS/etiology and pathogenesis; STREPTOCOCCUS