“Efficacy of the Moderna vaccine (mRNA-1273) for prevention of SARS-CoV-2 in Adult Participants currently being studied. Currently, efficacy is unknown – there is no recognized effective vaccine for the treatment of COVID-19. Estimated Study Completion Date: October 27, 2022”
ModernaTX, Inc. (updated 25 February 2021). A Phase 3, Randomized, Stratified, Observer-Blind, Placebo-Controlled Study to Evaluate the Efficacy, Safety, and Immunogenicity of MRNA-1273 SARS-CoV-2 Vaccine in Adults Aged 18 Years and Older. Clinicaltrials.gov, U.S. National Library of Medicine. Retrieved 2 April 2021. www.clinicaltrials.gov/ct2/show/NCT04470427.