Disappointing Year for Flu Vaccine Effectiveness

February 28, 2015 7:09 PM

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luiscar/iStock/Thinkstock(NEW YORK) — This season’s flu vaccine may be even less effective than initially thought.

HealthDay News reports that the vaccine is just 18 percent effective against the dominant H3N2 flu strain, down from 23 percent initially estimated by the U.S. Centers for Disease Control and Prevention. Even worse, according to the CDC, the vaccine may be just 15 percent effective in children betwe...

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