The risk of flu-related hospitalization during the 2011-12 flu season was 71.4% lower among all adults who received a shot and 76.8% lower among people ages 50 and older, according to a study. "This study is reassuring in light of recent reports that flu vaccination can be less effective in older adults," said study lead author Keipp Talbot. The findings appeared in the journal Clinical Infectious Diseases.

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