Moderna Inc. said its experimental coronavirus vaccine was 94.5% effective at protecting people from Covid-19 in an early look at pivotal study results, the second vaccine to hit a key milestone in U.S. testing. Ninety-five people in the study developed Covid-19 with symptoms; of those, 90 had received a placebo and only five Moderna’s vaccine.… Continue reading Moderna’s Covid-19 Vaccine Is 94.5% Effective in Early Results, Firm Says