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About COVID-19 Vaccines

Three COVID-19 vaccines have received emergency use authorization (EUA) from the U.S. Food and Drug Administration – the Pfizer-BioNTech vaccine and the Moderna vaccine, which both require two doses, and Johnson & Johnson (Janssen), which requires only one shot.

Recent studies from Pfizer and Moderna have shown their vaccines to be 95% and 94.5% effective against COVID-19, respectively. The Johnson & Johnson (Janssen) vaccine has been shown to be 663% effective.