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What Jonas Salk's approach to the polio vaccine can teach us about developing the COVID-19 shot | CBC Radio
Scientists celebrate the life of Jonas Salk, the man who defeated polio. - The San Diego Union-Tribune
Gates Foundation on Twitter: "Happy 100th birthday to Jonas Salk! His invention of the polio vaccine has saved millions from paralysis. #EndPolio http://t.co/QJkWL2vaKo" / Twitter
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