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COVID-19 Vaccines | NIH COVID-19 Research

Understanding COVID-19 Vaccines Which COVID-19 vaccines are available in the United States?  As of February 2022, two COVID-19 vaccines have been approved by the U.S. Food and Drug Administration (FDA), and one has been authorized for emergency use.   Pfizer, Inc., and BioNTech BNT162b2: On August 23, 2021, the FDA approved the Pfizer-BioNTech vaccine — […]