Seems particularly topical:

https://www.nytimes.com/2020/10/21/science/j-michael-lane-dead.html

https://www.washingtonpost.com/loca...a-1475-11eb-ba42-ec6a580836ed_story.html

J. Michael Lane, a globe-trotting epidemiologist who waged a 13-year war against the scourge of smallpox and led the final drive for its global eradication in 1977, when the last known vestige of the disease was snuffed out in East Africa, died on Wednesday at his home in Atlanta. He was 84.

I was too young to have the small, round, dimpled scar on my upper arm characteristic of the innoculation. As far as anyone knows, there are only two clusters of (virus) samples currently maintained on Earth!

*edit: added word virus to clarify my last sentence.