I always want to throw out that thing about people forgetting history being doomed to repeat it. Polio is one that people take so lightly. I knew a couple of folks who had polio as children. These were vibrant adults who were condemned to walkers and wheelchairs.

My sister has an autistic son. She doesn't believe the debunked theories connecting vaccines and autism. She's said that even if she did, she'd still not have kept her son from his vaccines...better he be autistic than dead.