Hello I have been on chemo for the last 5 month for CLL I will be going to have my last cycle in two weeks time. 

My grandsons school have informed us that one of the classmates is home with chicken pox. Should I be worried and does he need to stay away from me? He has no symptoms and have not yet had chicken pox yet even though he was exposed to it a few times while in nursery. 

Please advice.