The Flu Vaccine Might Not Have You Covered This Year
The Centers for Disease Control and Prevention says a common strain of the flu has mutated, making the vaccine less effective.By Madison Burke | December 4, 2014
Doesn't it seem like we're always reporting that the latest flu vaccine might not keep up with the latest strain? Well, here's another unfortunate warning as we head into the depths of flu season.
The Centers for Disease Control and Prevention says much of the flu virus going around this year has mutated, making this year's vaccine less effective. (Video via CNN)
So far, most flu cases this year are being caused by a strain called H3N2.