By Julie Steenhuysen CHICAGO (Reuters) – A U.S. government analysis of this season’s flu vaccine suggests it was effective in only 56 percent of people who got the shot, and it completely failed to protect the elderly against an especially deadly strain circulating during flu...
Flu vaccine worked in just over half of Americans who got it
Tuesday, February 26, 2013
Flu vaccine worked in just over half of Americans who got it
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