Mystery of Red Plague | Invention of World’s First Vaccine

For over 3000 years, a mysterious red plague had caused havoc in the whole world. Empires crumbled down because of it, whole civilisations were lost. It was a nightmare for people around the world. But there was one small village in England, which seemed immune to it. How could that happen? This is the story of Smallpox and how the first vaccine in the world was invented by Dr.Jenner.