"FDA Approves First COVID-19 Vaccine" (Press release). U.S. Food and Drug Administration (FDA). 23 August 2021. Archived from the original on 23 August 2021. Retrieved 23 August 2021.
"FDA Approves First COVID-19 Vaccine" (Press release). U.S. Food and Drug Administration (FDA). 23 August 2021. Archived from the original on 23 August 2021. Retrieved 23 August 2021.