Request #579 From Kayla

I read a book in middle school or high school, and I’ve been looking for it for so long. It takes place in one of the maritime provinces of Canada in what is implied to be post nuclear war. The main character lives in a society of people who outcast anyone who has a mutation, and his uncle is one of those outcasts. The main character develops a mutation where he is telepathically connected to a few other kids around his age. They hide it as they are afraid of getting kicked out of their society. They are found out eventually because one of them was hurt and the others felt it and reacted as if they feel it too. They are outcast and discover that there is a wider society of outcasts, there’s a helicopter (???).