I am 31 years old and have never had chicken pox. is it more serious if you contract it as an adult? should i get the varicella vaccine

Chickenpox: You should have a titer done to see if you are immune. If it comes back negative then you should be immunized. Many people have chicken pox but don't remember or fon't have enough symptoms for it to be diagnosed.

Chicken Pox: If you never had contacted chicken pox, you will never develop shingles. The shot will therefore not be necessary unless you go to areas of the world where chicken pox is prevalent.