Polio peaked in the U.S. in the year 1952, with 57,879 cases. Once the vaccine became widely available in 1955, this figure dropped to 29,000 cases. So, to claim that polio cases were dropping significantly before this point is incorrect.
Polio peaked in the U.S. in the year 1952, with 57,879 cases. Once the vaccine became widely available in 1955, this figure dropped to 29,000 cases. So, to claim that polio cases were dropping significantly before this point is incorrect.
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