Photo de stock - Dr. Francis Collins, Director of the National Institutes of Health (NIH), Dr. Robert Redfield (C), Director of the Centers for Disease Control and Prevention (CDC), and Dr. Gary Disbrow (R), Acting Director of Biomedical Advanced Research and Development Authority and Acting Deputy Assistant Secretary for Preparedness and Response at the Department of Health and Human Services (HHS), testify during a US Senate Appropriations subcommittee hearing on the plan to research, manufacture and distribute a coronavirus vaccine, known as Operation Warp Speed, on Capitol Hill in Washington, DC, July 2, 2020..Credit: Saul Loeb / Pool via CNP | usage worldwide. - Washington/District of Columbia/United States of America