Polio Amanpour_00001510.jpg
Polio Amanpour_00001510.jpg

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    Polio rises from the grave

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Polio rises from the grave

CNN's Hala Gorani, in for Christiane Amanpour, tells the story of polio's deadly comeback.

Polio rises from the grave

CNN's Hala Gorani, in for Christiane Amanpour, tells the story of polio's deadly comeback.