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The BCG Mark: Decoding the Science and Stigma of the World’s Most Common Scar

The mark is not random.
For years, people have hidden it, lied about it, or felt quietly ashamed of it. Some were told it meant they were poor, unclean, or from “backward” places. Others assumed it was a childhood accident or a botched injection. But that small, round scar on the upper arm carr… Continues…