Dear Mr. DuPont, I think your fears about hidden and harmful ingredients in vaccines are unwarranted. The health consequences for not immunizing yourself and your family are dire and far outweigh the risks of vaccines for commonly preventable diseases. The US Centers for Disease Control and Prevention (at http://www.cdc.gov/vaccines/vac-gen/additives.htm#What) has an easy to understand single page fact sheet on Ingredients of Vaccines. It lists frequent additives to vaccines and why they're necessary. It also provides additional resources and a comprehensive list of all ingredients in many common vaccines. Also, please cite your reference for mandatory vaccinations under ObamaCare. I can't find any reference to it. The only mandate I can find regarding immunization policy, for those newly insured under ObamaCare, is that insurance providers must make vaccinations cost-free. This is what the US Dept of Health and Human Services says, at http://www.hhs.gov/healthcare/facts/factsheets/2010/09/The-Affordable-Ca... "Individuals enrolled in these new group or individual health plans will have access to the vaccines recommended by the Advisory Committee on Immunization Practices (ACIP) prior to September 2009 with no co-payments or other cost-sharing requirements when those services are delivered by an in-network provider." John Hotvedt Liberty Twp, Susquehanna County