First of all, there are statistical studies that say the opposite. And because statistics generally can manipulated to say whatever you want them to, they don't hold a lot of weight for me. I'm not saying this is the case with those studies. However, when you have studies where mercury is injected into mice in a pattern similar to what children receive with the vaccine schedule, and the mice develop autistic-like behaviors, that bothers me a lot. Plus, there are a host of other studies that show what mercury and aluminum do to the body when injected. Just because most kids don't show any immediate symptoms, doesn't equal "safe" IMO. And it certainly doesn't prove that long-term damage isn't taking place, especially when you start piling on the vaccines. I've read a lot of different stuff in a lot of different places, and I don't have anything in front of me to cite from. I don't think the epidemic of problems we're seeing these days, including ADD, ADHD, autism, allergies, asthma, etc can be attributed to just one thing. But I definitely think that vaccines play a part and a lot more research needs to be done. I personally feel better delaying and spacing vaccines out and only doing those that are most important (and I get to pick which those are for MY kids) than giving into this idea that if we can create a vaccine for it, then why the heck not add it to the schedule? There haven't been enough studies to prove that the current schedule is safe, especially when there's enough out there to seriously question it.