Singer and actress Beyonce Knowles, who is the cover model of the 2007 'Sports Illustrated' Swimsuit issue, poses next to a poster of the cover at an event in Los Angeles, California in this February 14, 2007, file photo. The Sports Illustrated bash for its annual swimsuit issue has turned into a health scare for stars in Hollywood after a caterer working for celebrity chef Wolfgang Puck may have exposed them to acute Hepatitis A.[Reuters]

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