Smallpox vaccine scars: What they look like and why – Newsner

I have a clear memory of noticing a distinct scar on my mother’s arm when I was a child. It sits high up, close to her shoulder, taking the appearance of what looks like a ring of small indents in her skin around a larger indent.
Don’t ask me why that specifically attracted my attention all those years ago; I don’t remember. I recall only that it did, but as is so often the case, I sort of forgot it existed over the following years.
Well, obviously I didn’t forget it […]
Smallpox vaccine scars: What they look like and why – Newsner