My sons were made ill after the MMR shots, before we even left the clinic they were breaking out. They were both sick for a few days after that.
They have never spoken another word since that day, and have never been the same since. Cognitively they will always be little children, and will be incontinent for the rest of their lives.
I must be crazy to believe it had anything to do with the MMR injection.
BTW, did your sons get the shot from the same batch and at the same time? Your posts suggest as much.