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Scanning Electron Photomicrograph Of Polio Virions Stock PhotoVirus,Polio,Black And White,Horizontal,Illness,Immunofluorescent Photomicrograph,No People,PhotographyPhotographer Centers For Disease Control - edited version ©Science FactionCollection: Science Faction Scanning electron photomicrograph of polio virions. The polio virus lives in the human pharynx and intestinal tract. Poliomyelitis is an acute infection that involves the gastrointestinal tract and, occasionally, the central nervous system. It is acquired by fecal-oral transmission.