I really hope you're wrong, but this could be a possibility.
I remember after getting a booster shot...I think I was around 10-11 years old in 1995 I started doing weird things with my hands. A compulsion to touch and move my fingers around in strange ways. I become obsessed with the touch of my hands. I began rubbing my skin together and now have calluses all over my palms and between my fingers. I still do it to this day.
I feel that something in that vaccine altered something in my brain.
Luckily when I became an adult I had a choice and haven't had a vaccine since. Ironically I got the flu routinely 2-3 times per year when I was forced to get the flu shot by my parents. In the 10 years that I haven't gotten the flu shot I've gotten the flu one time from my roommate. It lasted 9 days for her. 2 for me.
I will never, ever, ever get another vaccine for anything.