By Meryl Nass, MD | March 14, 2022 Pfizer’s Bourla says we need a 4th shot. Pfizer sold $36.8 billion dollars’ worth of COVID vaccines in 2021, making its vaccine the top-selling pharmaceutical product in history. Pfizer has estimated its COVID vaccine sales for 2022 at $32 billion. Albert Bourla says we need a 4th dose of […]
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