Ok, quick question, chicken pox seems to be running through the kids in my sisters in laws' families like wildfire. We have been keeping our 6 month old away from them until the last few days (the little girl we thought was the last stopped showing bumps. Then, however, one of the kids my mother in law takes care of (who we though had had it) just blossomed. Our son was there at the time. How worried should we be, any precautions etc?