This Year's Flu Shot Might Not Protect Against Most Common Strain

This year's flu shot may not protect as well against a strain that is becoming more virulent.
Flickr Photo/Government of Alberta (CC-BY-NC-ND)
Marcie Sillman talks with Dr. Jeffrey Duchin about why this year's flu vaccine may be not very effective against the most common flu strain. Duchin is chief of epidemiology for Public Health - Seattle & King County.