The Pfizer-BioNTech COVID-19 Vaccine and Moderna COVID-19 Vaccine have been approved by the U.S. FDA. The Pfizer vaccine was approved on August 23, 2021. It is now marketed as Comirnaty. The Moderna vaccine was approved on Jan. 31, 2022. It is now branded as Spikevax. Both vaccines will continue to be monitored for safety and efficacy.