Additives in our vaccines?

There's so much controversy surrounding vaccines. I've read that they can cause autism and neurological problems. In California and some other states, you can get an exemption or vaccination waiver at schools if you are philosphically opposed to immunizing your child. But at my daughter's summer sleepaway camp they have a mandatory rule that every child must be vaccinated. For 2009, the count was 15. Next year, more will be added. New Jersey now has mandatory vaccination laws for all children. F