I got chicken pox in my 30s, before a vaccine was available.

It's the only time in my life I considered becoming a pavement bollard by taking a dive from my 3rd floor apartment.

The pain was so bad that I ran a shower without the cold tap on until I passed out...for 2 days. Yes, I got hyperthermia, and was severely dehydrated but it was the only way the pain would stop.

Anti vaxxers are to be treated with contempt and mocked ceaselessly.

Note: I think you can get the vaccine at any age. Check with a reputable doctor or your local health authority.