1. Food and Drug Administration. Coronavirus (covid-19) update: FDA authorizes Pfizer-BioNTech covid-19 vaccine for emergency use in adolescents in another important action in fight against pandemic. 10 May 2021. www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-authorizes-pfizer-biontech-covid-19-vaccine-emergency-use.
2. Top St Jude pediatric virologist reacts to FDA emergency authorization of covid-19 vaccine in children. St. Jude Children’s Research Hospital. 10 May 2021. https://30seconds.com/health/tip/23389/St-Jude-Pediatric-Virologist-Reacts-to-FDA-Emergency-Authorization-of-Pfizer-Vaccine-for-Kids.
3. Centers for Disease Control and Prevention. Covid-19 vaccinations in the US. 10 May 2021. https://covid.cdc.gov/covid-data-tracker/#vaccinations.
4. Coronavirus in the US: latest map and case count. New York Times. 10 May 2021. www.nytimes.com/interactive/2021/us/covid-cases.html.