9 min listen
April 12th: The Polio Vaccine Is Approved
ratings:
Length:
9 minutes
Released:
Apr 12, 2022
Format:
Podcast episode
Description
On April 12th, 1955, in Ann Arbor, Michigan, Dr. Jonas Salk’s vaccine for polio was approved.
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Released:
Apr 12, 2022
Format:
Podcast episode
Titles in the series (100)
April 8th: The 13th Amendment Is Passed by Reflections of History