Like it or not, Hollywood shapes perceptions on key societal issues. Jenny McCarthy and Jim Carrey, notably, have been vocal in their questioning of vaccine safety, having a huge influence upon their Hollywood brethren and thus the mainstream public. At least one star, Amanda Peet, is fighting that perception and trying to restore some sanity to the vaccine argument. National Public Radio recently presented an excellent overview of Peet's campaign to defend vaccines.
--PWT
