Moderna Covid vaccine efficacy falls slightly to 90% in US trial

Moderna Covid vaccine efficacy falls slightly to 90% in US trial The new results come from its ongoing Phase 3 clinical trial involving more 30,000 people across the United States, and the headline efficacy figure is a slight decrease from an earlier figure of 94.1 percent published in the New England Journal of Medicine in December. https://ift.tt/eA8V8J