Janie - I thought along the same lines - same with mumps. If a man gets mumps as an adult, it can be really bad.

But by the sounds, it doesn't really prevent them getting chicken pox, it seems that a lot still get it, so chances are they'll still be exposed to chicken pox as kids rather than in adult hood.. if that made any sense lol. I'd still prefer a milder case of chicken pox whether child or adult.