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      Question

      The first vaccine against smallpox disease was developed

      in the year 1797 by _____
      A G.J. Mulder Correct Answer Incorrect Answer
      B E. Jenner Correct Answer Incorrect Answer
      C G.J. Mendel Correct Answer Incorrect Answer
      D Robert Koch Correct Answer Incorrect Answer
      E None of the above Correct Answer Incorrect Answer

      Solution

      First vaccination, Edward Jenner took pus from a cowpox lesion, inserted it into an incision on a boy's arm to develop the immunity against smallpox in 1797.

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