Thrombocytosis is defined as a platelet count above the upper limit of the normal range (450 x 10 9 /L in adults). This article aims to outline diagnosis, investigation and management of patients with thrombocytosis and to highlight possible complications.
  Dr Edward Jenner discovered the vaccine in 1796 and published his findings in 1798. Edward Jenner invented the vaccine for small pox in 1798.He  prepared the vaccine f â¦ rom the cow pox virus. His discovery could  save more lives than any other medical discovery. Dr Edward Jenner discovered the vaccine in 1796 and published his findings in 1798. Edward Jenner invented the vaccine for small pox in 1798. He  prepared the vaccine f â¦ rom the cow pox virus.
Initially, the terms vaccine / vaccination referred only to smallpox, but in 1881 Louis Pasteur proposed that to honour Jenner the terms be widened to cover the new protective inoculations being introduced.nother early account was Dr John Fewster 's 1765 paper on Cowpox and its ability to prevent smallpox read to the London Medical Society. He reported that variolation induced no reaction in persons who had had cowpox. Fewster was a contemporary and friend of Jenner.