Every celeb that attended Ashton Kutcher’s big birthday bash on Feb 7th are probably running scared, after news that one of the bartenders was infected with Hepatitis A. All attendees - including A-listers Kutcher, Demi Moore, Madonna, Bruce Willis, Gwyneth Paltrow and Salma Hayek - are being urged to get a Hep A vaccination. Unfortunately, this bartender worked on two other days at the Socialista nightclub, and as many as 800 people could have visited on the three days.

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