Moderna Vaccine Is Highly Protective and Prevents Severe Covid, Data Show December 15, 2020 Auto Bot AstraZeneca PLC, Clinical Trials, Coronavirus (2019-nCoV), Food and Drug Administration, Moderna Inc, National Institutes of Health, United States Politics and Government, your-feed-healthcare 0 The positive review likely ensures that the F.D.A. will approve a second coronavirus vaccine this week for millions of Americans.