This is where I agree with you. What bothers me is that I think the vaccine wasn't sufficiently studied before mass vaccination took place, and now what we're seeing is LOTS of adults my parents' age getting shingles. My doctor said they now suspect that the "immunity" we all thought we had to varicella depended on boosters in the form of exposure to little kids who had the disease; now that they're not getting it, those boosters are going away.

We're planning on having the girls catch chicken pox-- I don't know if naturally is the right word, because we're going to actively ensure that they get it when it's going around next. We waited until Caroline was verbal so we can keep her from scratching.