Pfizer's CEO, Albert Bourla, said in an interview with NBC News that they believe a third dose of the vaccine will boost immune response and help protect against variants such as the ones first discovered in South Africa and the United Kingdom.
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"Every year, you need to go to get your flu vaccine," Bourla said. "It's going to be the same with COVID. In a year, you will have to go and get your annual shot for Covid to be protected."