SF Bay Area
There are a lot of people alive today because of the work of Henderson and all the people in the WHO and various health ministries and the like. RIP.
1.5-2 million deaths per year, and 10 million cases (with possible disfigurement and blindness) as recently as 1966, according to the WHO's book on the smallpox eradication campaign. One of the best investments the developed world ever made.