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Dr. Albert Bourla

COVID-19: 'Many Variants Are Coming,' Pfizer CEO Warns, Saying Fourth Shot Will Be Needed COVID-19: 'Many Variants Are Coming,' Pfizer CEO Warns, Saying Fourth Shot Will Be Needed
Covid-19: 'Many Variants Are Coming,' Pfizer CEO Warns, Saying Fourth Shot Will Be Needed Warning that "many variants are coming," the chairman and…