Okay not REALLY.
BUT, the bartender at the event serving drinks to Lucy Liu, Salma Hayek, Madonna, and other celebs was found infected with Hep A! Since he was handling these with his bare hands, the New York Health Department was worried that he might have transmitted it through serving drinks.
The vaccine should be administered within 2 weeks of exposure, and may minimize health risk and give the celebs a sense of comfort.
I'm not providing the link cuz no one REALLY cares...