UNDATED (KDAL) - A new study conducted by the University of Minnesota shows that flu shots may not be as effective as previously thought. The flu vaccine currently in use across the U-S prevents the flu in about 59 percent of healthy adults who get the shot. Earlier studies projected that the vaccine protected 70 to 90 percent of those who receive it. U-M researchers say they're not sure how well the vaccine works in young children and the elderly. The study notes that a new and improved generation of vaccine needs to be developed to help hold the flu in check.
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