There does need to be more education re:CP, even within the medical profession. I,m an ex-nurse, adult, and worked for many years on a chest ward, we used to get a lot of immunocomprimsed patients, but also one or 2 with TB. So we were shit hot on our isolation nursing.
Why am I telling you this? Well even with that none of us realised that CP was so bad, clearly you don't want any of your poorly patients to get another infection, but even with research at the time we didn't realise the danger.
What brought it home was when one of the nurses developed spots on her first shift back from 2weeks holiday. We called A/E asking if we could send her down, and then called night nurse manager to inform that we would be sending her home.
Quite rightly all hell broke loose, we were all pg tested, the one known pg was sent home having had anti viral treatments. All patients were then nursed as isolation patients. Thankfully none of them did contract it, sadly the nurse who did have it (and never knew where she had got it from) passed it on to her fit/active/ 20+ year old brother who ended up spending 2 weeks in ITU.
He very nearly didn't make it, crashed twice, family told at one point to say their goodbyes. He didnt fully physically recover for over 18 months.
As I said the nurse never knowingly came in contact, no young children in the family, so it had to have been when out and about.
What lots of people don't realise is that the Chicken Pox strain that is around now is stronger than when it was a more common childhood disease. People who throw Pox parties think that it's something mild, after all their Mum/Dad/Great Aunt Sue had it and was fine. . .
It's only because of this that I as a childless person know how rotten it is, and any one who thinks shingles isn't that bad gets pointed in the direction of my friend who ended up have to retake a year in Uni from catching it at 19.
Good on you OP for taking the time to check up the advice you were given and for taking all the advice on board.