All the bad stuff in them: mercury, animal viruses and who knows what else. Also there are hundreds of babies that die every year from them, the CDC figures its better to lose some babies and try to wipe out these viruses.
I often go to this site www.nvic.org. There is so much information, books, links and articles.
http://nvic.org/state-site/state-exemptions.htm, just find your state and there is usually a direct link to the state with the laws. I have watched a few DVD''s from Dr. Sheri Tenpenny, here is a link for her http://www.nmaseminars.com/.
