ds2 will be 9 in August. He has been exposed to chickenpox many times but has never caught it. He gets ill rarely so seems to have a strong immunity system.
In an ideal world, I want him to get it well before his exams in year 6 and certainly before he is a teenager. AFAIK, chickenpox is far worse for adults.
What should I do - and incidently, have most 8 or 9 year olds had chickenpox already?