That’s really interesting, I hadn’t heard that before.

I’m almost 60.

I found out that I’m allergic to penicillin when I was a child (in the mid-70s) and had an anaphylactic reaction. I still remember being intubated by the paramedics because I couldn’t breathe.

Five years ago I had tandem stem cell transplants to treat myeloma (blood cancer), which completely wiped out my immune system. I had to have all my childhood vaccines over again, and I was re-tested for penicillin allergy, (because they thought that might have been erased too); it’s definitely still there.