Meet the Heroes and Villains of Vaccine History - TIME

No one knows the name of the dairy maid 13-year old Edward Jenner overheard speaking in Sodbury, England in 1762, but everyone knows what she said: “I shall never have smallpox for I have had cowpox. But it was not until 34 years later, in 1796, that he first tried to act on the dairy maid’s wisdom, vaccinating an 8-year-old boy with a small sample from another dairy maid’s cowpox lesion, and two months later exposing the same boy to smallpox. The experiment was unethical by almost any standard—except perhaps the standards of its time—but it worked. Jenner became the creator of the world’s first vaccine, and 184 years later, in 1980, smallpox became the first—and so far only—disease to have been vaccinated out of existence. Jonas Salk and Albert Sabin didn’t much care for each other. The older, arid Sabin and the younger, eager Salk would never have been good matches no matter what, but their differences in temperament were nothing compared to a disagreement they had over science. Both researchers were part of the National Foundation for Infantile Paralysis—later dubbed the March of Dimes—and both were trying to develop a polio vaccine. Salk’s vaccine was proven successful in 1955. Sabin’s—which was easier to administer, especially in the developing world, but can cause the rare case of vaccine-induced polio due to viral mutations—followed in 1962. Both vaccines have pushed polio... Source: time.com