The Mysterious Origins of the Smallpox Vaccine

Fascinating read from SmithsonianMagazine. In 1796, English physician Edward Jenner had a hunch. As hundreds of thousands around him succumbed to the blistering agony of smallpox, Jenner’s eye was on the rosy, unblemished complexion of Sarah Nelmes, a local milkmaid. Her skin bore none of the oozing lesions that signaled...