NIH. “Vaccine Types | NIH: National Institute of Allergy and Infectious Diseases.” NIH, 7 Jan. 2019, http://www.niaid.nih.gov/research/vaccine-types.

-Moderna's COVID-19 Vaccine

-Pfizer-BioNTech COVID-19 Vaccine

-Vaccines in Phase 3 Clinical Trials As of December 28, 2020, large-scale (Phase 3) clinical trials are in progress or being planned for three COVID-19 vaccines in the United States:

AstraZeneca’s COVID-19 vaccine Janssen’s COVID-19 vaccine Novavax’s COVID-19 vaccine​