Just recently at the vaccine-court, the anti-vaccine fanatic's claim that the mercury-based preservative thimerosal causes autism, was defeated. The science was settled a fair while ago on this issue, but Anti-vaxxers are true believers, and like creationists, will continue to believe whatever they want despite all evidence pointing to the contrary.
So these people will continue protesting against vaccines, despite the science being settled, and then being defeated in court. The parallels with creationists are quite funny, you see the science on creationism/evolution was settled a long time ago and people still believed in it, and then when the creationists wanted to teach their garbage in public schools, they were taken to court, and were completely decimated. Yet after being embarrassed in a court of law in 2005, the same people keep trying to put their fairy-tales into classrooms.