Cathy, the chicken pox vaccine came out maybe mid 90's--my kids had chicken pox in early and mid 80s and they missed it.
My pediatrician said with that one, it was much better to get the real disease, and they did not know how the shots would play out for the kids who got them--if they might in fact be susceptible to chicken pox as adults. He thought they might need boosters?
Don't know about shingles.