Our youngest ds3 came down with chicken pox on Friday 😔 , we also have an older ds who hasn't had it yet. Odds are he will more than likely get it, the symptoms don't show for upto 21 days from exposure. Unfortunately they are back to school in a couple of weeks, fine for the youngest he should be better by then. How will I know if our oldest is contagious if the spots haven't appeared, would it be unreasonable to keep him off school just in case. Wouldn't want him to spread it round the school. I hope that makes sense.