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Pfizer CEO on formulating Covid-19 vaccine for younger and older populations

U.S pharmaceutical giant Pfizer and German biotech firm BioNTech said their coronavirus vaccine was more than 90% effective in preventing Covid-19 among those without evidence of prior infection, according to data published Monday from their late-stage vaccine trial. Pfizer CEO Albert Bourla joins "Squawk Box" to discuss.
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Mon, Nov 9 20208:15 AM EST