I looked into this a few weeks back.
Shingles is the re-emergence of dormant Chicken Pox.
If you’ve had chicken pox then the more chicken pox you’re exposed to the better because it boosts your immunity and reduces your chances of getting shingles in later life. Incredibly that’s why the NHS don’t immunise children against Chicken pox – we want adults to have more exposure to Chicken Pox in their adult life to increase our immunity: We literally use our Children as as a natural booster to our immunity so fewer adults get shingles!
So unless you’re frail and elderly or in a weak state for some other reason this visit will do you a great deal of good.
The bad news is if you live long enough there’s an 80pc chance of getting Shingles. Cheer up though, you might die before you get it.
…and if it really worries you you can pay £120 quid or so to get vaccinated at a UK high street Chemist which will boost your immunity reduce your chance of shingles.