More recently, we have seen him try to tread the line where he is essentially saying things like, "People should think about vaccines. I don't really think it is actually a personal choice. Lauren Goode: Katie, right now, is Kennedy in support of MMR, or is he still toeing the line on vaccines? Healthy people, generally speaking, healthy kids, healthy adults who go get the MMR vaccine do not die from that vaccine. I don't really care if, at some point now, he says the MMR vaccine is the most effective way to prevent measles.