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.
It was first introduced in 1963. The combination measles-mumps-rubella (MMR) vaccine first became available in 1971. The chickenpox vaccine was added to these three in 2005 giving the MMRV vaccine.easles vaccine is a vaccine that is very effective at preventing measles. After one dose 85% of children nine months of age and 95% over twelve months of age are immune.