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19 July, 23:46

Who invented the polio vaccine

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Answers (2)
  1. 20 July, 01:08
    0
    Jonas Edward Salk

    Jonas Edward Salk was an American medical researcher and virologist. He discovered and developed one of the first successful polio vaccines.
  2. 20 July, 03:06
    0
    hello!

    your answer is goin to be

    Jonas Edward Salk

    have a goed day
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