Half of DD's nursery class have come down with chicken pox which means that I fully expect her to join them in the next couple of weeks, sooner if her current behaviour is anything to go by. However DS2 is only 11 weeks so how likely is he to catch it from her. He has about 9 bf's and 2 bottles a day and I could really do without a baby with chicken pox. Am assuming that as DS1 had a nasty dose at 2.5 he'll be immune won't he?