The chickenpox vaccine was developed in Japan in the 70's. It was not licensed in the U.S. until 1995. Maybe there were some trials in the 80's in the U.S., but it wasn't available to the public in the U.S. until 1995.
en.wikipedia.org
I know this, because I had the chickenpox as a child in the early 60's, and again on my 21st birthday in 1992. The one on my 21st birthday was miserable. EVERY inch on my body was covered in the rash: up there, down there, under there, everywhere. In my ears, eyes, nose, armpits, between my toes, butt crack, and yes, everywhere else. It was awful. I recall sitting backwards on a kitchen chair in my gym shorts, crying in misery, and my friends coming over to drink beer with me legally on my 21st birthday, standing in the kitchen watching my mom put calamine location on my back. I couldn't drink but half a beer, as I was that uncomfortable. Me, not drinking a beer, on my 21st birthday, shows just how serious it was!
I still have many scars from it to this day.
My wife calls them pox marks.
I got the chickenpox vaccine as soon as it came out in the mid 90's. I don't want them again. I also got the shingles vaccine, as I'm a prime candidate for shingles.
