This Week

THE INTERVIEW

Polio expert Bruce Aylward on eradicating the disease worldwide, and why a failure to immunize every child could lead to an outbreak here

KATE LUNAU February 3 2014
This Week

THE INTERVIEW

Polio expert Bruce Aylward on eradicating the disease worldwide, and why a failure to immunize every child could lead to an outbreak here

KATE LUNAU February 3 2014