Smallpox Vaccine Scars: How They Appear and the Reasons Behind Them

I remember clearly the first time I noticed a distinct scar on my mother’s arm when I was a child, high up near her shoulder in an unusual pattern. It was a ring of small indents around a larger mark that immediately caught my eye. At the time, I don’t really know why it held my fascination, but I remember staring at it and wondering what had caused such an odd-looking mark to appear on her skin. It was strangely intriguing to young me. Over many years I forgot my childhood interest in that scar, though the scar itself never went…
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