The company defended its claims of 79 percent efficacy for its coronavirus shot and said it would release more up-to-date trial results within 48 hours.The company defended its claims of 79 percent efficacy for its coronavirus shot and said it would release more up-to-date trial results within 48 hours.Vaccination and Immunization, Coronavirus (2019-nCoV), AstraZeneca PLC, Fauci, Anthony S, United StatesRead More