Dr. Jonas Salk's polio vaccine trials began / Deportation of the Chechens and Ingush began - Feb. 23

This Day in History Class - A podcast by iHeartPodcasts and HowStuffWorks

On this day in 1954, polio vaccine trials began. / On this day in 1944, the Stalinist regime began deporting the Chechens and Ingush into remote areas of the Soviet Union. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.