Dr Jonas Salk           SALK, JONAS  1914-1995   Jonas Salk developed the  scratch line polio  vaccinum. As a student, Salk became  interested in vaccines. At the time it had been believed that bacterial vaccines could be make from a preparation of dead bacteria, which would immunize without  induce an infection. solely scientists believed that a live vaccine had to be use in order to immunize against a virus. Salk was unsure of this and,  later on his internship he joined Dr. Thomas Franciss influenza vaccine  final cause at the University of Michigan.  As a result of Salks efforts, the influenza vaccine became the first killed-virus vaccine.

     After the completion of his work in Michigan, Salk  move to the University of Pittsburgh to  civilize his own viral research laboratory, where he began  underdeveloped a polio vaccine under the sponsorship of the March of Dimes Foundation.  Salk was  persuade that  only when a killed-virus vaccine could be both  potent and safe. In 1954 national field trials were conducted for t...If you want to get a  proficient essay, order it on our website: 
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