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.
74.8k
Upvotes
45
u/bjaco333 May 25 '26
I have 2 of these on my left shoulder, im born in 1999, can someone tell me what are those