Smallpox Vaccine

“The Smallpox vaccine, introduced by Edward Jenner in 1796, was the first successful vaccine to be developed. He observed that milkmaids who previously had caught cowpox did not catch Smallpox and showed that inoculated vaccinia protected against inoculated variola virus.” Smallpox was fatal in up to 30% of cases. Smallpox has existed for at least 3,000 years and was one of […]