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  4. By 1962 this doc's injected vaccine helped reduce polio cases in the U.S. from more than 50000 a year to fewer than 1000

By 1962 this doc's injected vaccine helped reduce polio cases in the U.S. from more than 50000 a year to fewer than 1000

Since you have landed on this page then most probably you are looking for the By 1962 this doc's injected vaccine helped reduce polio cases in the U.S. from more than 50000 a year to fewer than 1000 answer. This question was last seen on December 2 2021 Jeopardy TV Game Show.

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