FIRST VACCINE-EDWARD JENNER

Who knew that cows would save the lives of countless humans?
         In 1976,a physician named EDWARD JENNER decided to prove a theory that had been circulating for some time. 



     Smallpox once killed millions of people worldwide.Cowpox was a less serious disease related to smallpox that milkmaids who had contracted cowpox were later immune to smallpox.
      Jenner tested this theory when he took some infected cowpox matter and exposed an otherwise healthy boy through a cut in his arm.After the boy caught an recovered from cowpox,Jenner exposed him to small pox via an injection.
      


       The boy remained healthy,and the world's first vaccine was born.The cows,for their part,were honored when the term "vaccine"was coined after "vacca"which is Latin word for 'cow'.


       Edward Jenner was born in Berkeley,Gloucestershire on 17th may,1749 the son of local Vicor. In 1796 he discovered first vaccine for small pox.He died on 26th January 1823


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