As Whooping Cough Rebounds in U.S., Infants at Greatest Risk

Aired: 8/22/2012 | 0:08:15 | Clip
As the worst whooping cough outbreak in more than half a century grips the U.S., health officials are saying that most adults and teens are woefully under-vaccinated. Health correspondent Betty Ann Bowers explores what's behind the resurgence and its potential consequence for those who can't be vaccinated: newborns.

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