My son is 10 yrs old and is going on his first retreat in May. I got the paperwork out today and of course on it is the question "Date of your last tetanus shot?" I want him to go, he needs to go on this so do I just put a date on there. He had one when he was a baby and has not had any more vaccines since his huge allergic reation and seizure from the MMR shot when he was 18 months old. Yes its to do with our church but I dont want to tell them he wont have another tetanus shot. They are going to Kentucky for a week to help on farms so what do I do, get him a tetanus shot, risk him having another seizure????