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Watch CNBC's full interview with Pfizer CEO Albert Bourla

Pfizer CEO Albert Bourla joins The Exchange to discuss the need for a booster dose of the Pfizer vaccine. New U.S. data shows that Covid immunity wanes six to eight months after becoming fully vaccinated with the Pfizer vaccine. Bourla also details the company's development of a new oral anti-viral pill to prevent against Covid.
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Wed, Jul 28 20211:28 PM EDT