I am old enough that I was innoculated for smallpox when I was a child.:)
I have read varying accounts of how effective such a vaccine would be against the risk of current infection.
I have an uncle who is a retired GP who has said (if my mother got the story correctly) that the type of vaccine we received as children might have varying periods of effectiveness--IOW, it might and might not still protect me.
Do you know if this is the case?