April 12th: The Polio Vaccine Is Approved Podcast Por arte de portada

April 12th: The Polio Vaccine Is Approved

April 12th: The Polio Vaccine Is Approved

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On April 12th, 1955, in Ann Arbor, Michigan, Dr. Jonas Salk’s vaccine for polio was approved. To learn more about listener data and our privacy practices visit: https://www.audacyinc.com/privacy-policy Learn more about your ad choices. Visit https://podcastchoices.com/adchoices
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