Below you will find the solution for: He worked to develop a flu vaccine before coming up with one for polio declared safe on April 12 1955 Jeopardy .
Since you already solved the question He worked to develop a flu vaccine before coming up with one for polio declared safe on April 12 1955 which had the answer JONAS SALK, you can simply go back at the main post to check the other answers. You can do so by clicking the link here Jeopardy April 04 2023
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