Family have been exposed to chicken pox virus last week (lived in same address as someone with chicken pox). We have a 13 week old baby and now this family want to visit us. I don't feel comfortable with this. The incubation period in adults seems to be 21 days so I don't want anything passed onto the baby. They could be asymptomatic/carriers - I think two of them are yet to have chickenpox. Would you do the same? I'd rather be safe than sorry