Thoughts on the eradicator of smallpox: 'You can argue that he's may of saved more lives than any other single human being in human history'

"If you induce a back of the envelope calculations given the hundreds of thousands of people who died every year of smallpox prior to when the campaign was started and looking at it now that its gone, D.A.'s work has saved literally tens of millions of lives. You can argue that he's may of saved more lives than any other single human being in human history. "That's the magnitude of his accomplishment."- Dr. Peter Hotez, Dean of the National School of Tropical Medicine at Baylor College of Medicine in Houston, on the accomplishments of DA Henderson after his death on Aug 19, 2016.