the smallpox vaccines were given on the upper left arm--if you went to a mass vaccine event (as i did at my elementary school one Saturday) the vaccine was on the outside of the arm---if you went to a personal physician, it may have been on the inside of your upper arm--the vaccine would leave a circular scar the size of a dime (my was an oval because i flinched when jabbed and the wound was larger than normal)...the vaccine scabbed over and was there for a couple of weeks until it fell off--yet the scar was there for years...so Druff if you got one you would have noticed the scar because it was long lasting---but eventually the scar goes away.