CNN.com - Health: Polio rises from the grave

Polio rises from the grave

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

Source: http://rss.cnn.com/~r/rss/cnn_health/~3/w88X8MwtXho/polio-amanpour.cnn.html