This weekend will be big for movie buffs, football fans and Barack Obama. But as Americans flock to the Sundance Film Festival, the NFL playoffs and the Presidential Inauguration, the weekend could also be big for the flu.
About 35,000 Americans have been sickened by an early and nasty wave of influenza, according to the U.S. Centers for Disease Control and Prevention. And while the outbreak appears to be abating, flu activity is still widespread.
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