Today, smallpox vaccinations no longer occur. I realized a long time ago that I could roughly guess at someone's age based upon whether or not they have that scar. Recently, I noticed a non-American friend with the scar, even though they're younger than I expected. Thus, this completely useless poll.
Do you have a smallpox vaccination scar?
Your age in years
Where did you live when you received the vaccination?
Note: it's OK to guess where you lived. I think I was in Texas when I received my vaccination, but I may have been living in Okinawa at the time. I'm not sure.
And I idly wonder how many people won't answer because they don't want to reveal their age? :)