i have a 4 yr old with autism, and i did see a big change when he received the mmr. im not saying it was due to it but idk..When he was an infant we did see him rock and flap, so we are not sure if the vaccines, woke his autism even more. very confusing and tiring but im not to focused on that. im focused on teaching him how to be independent and how to communicate. he is non verbal.