This Year's Flu Shot Not Very Effective

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 (Justin Sullivan/Getty Images)

This year's flu vaccine might only be 23 percent effective because of mutations in this season's most predominant flu strain, according to a new report from the Centers for Disease Control and Preventin (CDC). Usually, the shots are about 60 to 65 percent effective. We'll discuss why doctors are still recommending this year's shot, and find out other ways you can protect yourself from the flu.


Art Reingold, professor and head of the Division of Epidemiology at the UC Berkeley School of Public Health