![What Jonas Salk's approach to the polio vaccine can teach us about developing the COVID-19 shot | CBC Radio What Jonas Salk's approach to the polio vaccine can teach us about developing the COVID-19 shot | CBC Radio](https://i.cbc.ca/1.5810309.1605901978!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_940/2660359.jpg)
What Jonas Salk's approach to the polio vaccine can teach us about developing the COVID-19 shot | CBC Radio
March of Dimes - Today is World Polio Day. Back in April 1955 the vaccine developed by Dr. Jonas Salk and funded by the March of Dimes was declared safe, potent and
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