1. Food and Drug Administration. FDA takes key action in fight against covid-19 by issuing emergency use authorization for first covid-19 vaccine. 11 Dec 2020. https://www.fda.gov/news-events/press-announcements/fda-takes-key-action-fight-against-covid-19-issuing-emergency-use-authorization-first-covid-19.
2. Covid-19: FDA panel votes to authorise Pfizer BioNTech vaccine
3. Dwyer C. Warp Speed official: 1st shipments of covid-19 vaccine will be delivered on Monday. National Public Radio 2020 Dec 12. https://www.npr.org/2020/12/12/945792399/warp-speed-official-1st-shipments-of-covid-19-vaccine-will-be-delivered-on-monda.
4. US expect to have immunized 100 million against covid-19 by end of March—Slaoui. Reuters 2020 Dec 13. https://www.reuters.com/article/health-coronavirus-usa-immunizations/u-s-expects-to-have-immunized-100-million-against-covid-19-by-end-of-march-slaoui-idUSKBN28N0HH.
5. Coronavirus in the US: latest map and case count. New York Times 2020 Dec 13. https://www.nytimes.com/interactive/2020/us/coronavirus-us-cases.html?auth=login-email&login=email.