Mixed infection with type 2 poliomyelitis virus and Columbia SK group virus in man; an attempt to explain any relation of viruses of the Columbia SK group to human poliomyelitis.
D060085:Coinfection; D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D017955:Poliovirus; D014780:Viruses
POLIOMYELITIS VIRUS; POLIOMYELITIS/immunology