It is really frustrating when your child has something wrong with them and you don't know why. And I agree with you, if it's ever proven that the shots cause autism or anything else. Something should be done about it. I know you said your son is fairly high functioning. I know many autistic children have a lot of difficulty communicating and can't really expess emotions well. That must be really hard. My children will run up to me at the oddest times and hug and kiss me and tell me they love me and that is the greatest feeling. I couldn't imagine not having that.