It is my cousins birthday tomorrow and we are all invited but her niece who lives at the house has chicken pox (started yesterday) my DD is nearly 6 and has had them mildly a couple of years ago but has since been exposed several times and seems immune however my DS who is 1 has not had them yet and I am not sure whether I should deliberately expose him - the other point is we are due to go on holiday on the 29/6 and i understand we cannot fly - what woudl you all do ?