Pfizer Seeks Full F.D.A. Approval for Its Covid Vaccine मई 07, 2021 byप्रगतिवादी मंच एक टिप्पणी भेजें The vaccine has been used under an emergency authorization since December. A decision by the Food and Drug Administration could take months. source https://www.nytimes.com/2021/05/07/world/pfizer-covid-vaccine-fda-approval.html
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