mutant strain

asthma

New U.S. Whooping Cough Strain Raises Questions

Researchers have discovered the first U.S. cases of whooping cough caused by a germ that may be resistant to the vaccine.

02/06/2013

A woman blows her nose. (credit: Chip Somodevilla/Getty Images)

Flu Shot Will Not Protect You From Mutant Strain

The flu is in Texas – and even if you’ve taken precautions you could still get sick. That’s because this year’s strain of the virus is not covered by this year’s flu shot.

CBS 11–11/13/2012