Moderna's Coronavirus Vaccine Nearly 95% Effective, Analysis Finds : Shots - Health News

A second COVID-19 vaccine now also appears highly effective in preventing illness following exposure to the virus that causes the disease. The biotech company Moderna Inc. said Monday that its experimental vaccine was 94.5% effective in preventing disease, according to an analysis of its clinical trial. The news comes a week after Pfizer and BioNTech said their vaccine was more than 90% effective. The results for both vaccines come from interim analyses of large clinical studies. In the Moderna study there were 30,000 volunteers. Half got two doses of the vaccine 28 days apart; half got two shots of a placebo on the same schedule.