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l0x1 TIL that India is credited with being one of the first civilizations to inoculate their children in times of pestilence to boost immunity and stop the spread of disease (1,000 years ago). They made a small incision into the child’s arm, then rubbed it with Smallpox scabs and a thin cloth.
Mkkb TIL Fingerprints are not unique, and a Portland, WA attorney was arrested for the Madrid train bombings because his fingerprint matched an Algerian terrorist.