In 1796, an unknown country doctor named Edward Jenner developed and administered the world's first vaccine-turning the tide in humanity's age-old war against disease. Award-winning author Albert Marrin explains the significance of "immortal" Jenner's gift to mankind as he narrates...
For hundreds of years, smallpox killed millions of people around the world, and those who survived were left with terrible scars. But in the 1700s, Edward Jenner made a discovery that would change all of that.