Vaccines against COVID-19 may begin arriving within days in the United States, as the fastest-ever vaccine development reaches a conclusion. Experts say no corners have been cut. But the U.S. Food and Drug Administration (FDA) is considering authorizing the vaccines after a shorter-than-normal safety testing period. Nothing sinister has turned up in clinical trials so far, … continue reading -> “Experts: Vaccines Appear Safe, But Some Questions Remain”