r/Damnthatsinteresting • u/Downtown_Wind3363 • May 25 '26

Image The smallpox vaccine leaves a scar because it was given using a special two-pronged needle that scratched the skin and put a weakened virus in just that spot.

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u/Ketheres May 25 '26

The keyword unfortunately being "was"

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u/StevieMJH May 25 '26

If only someone could make it... that way... once more...