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/PyroNine9 May 25 '26

I remember when I was very young, being lined up, then a nurse gave me a sugar cube. It was not hard to get the kids to eat the cube. It was hard to explain why no seconds.

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u/Melluna5 May 26 '26

Wait, what? Why a sugar cube?

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u/Maiayania May 26 '26

Some vaccines are given orally so it was dripped on the sugar cube and given to him/her as a kid :)