Dr. Redfield is a virologist and former director of the US Centers for Disease Control and Prevention (CDC) and the administrator of the Agency for Toxic Substances and Disease Registry from 2018 to 2021 and the senior public health advisor to Governor Hogan and the State of Maryland 2021-2023. He also served as a member of the White House Coronavirus Task Force and member of the board of Operation Warp Spread. He was a member of the US President’s Advisory Council on HIV/AIDS from 2005 to 2009, and was appointed as chair of the International Subcommittee from 2006 to 2009. He is a past member of the Office of AIDS Research Advisory Council at the National Institutes of Health, the Fogarty International Center Advisory Board at the National Institutes of Health, and the Advisory Anti-Infective Agent Committee of the Food and Drug Administration (FDA). Dr. Redfield is a co-founder of the Institute of Human Virology at the University of Maryland, School of Medicine. He has more than 35 years in experience in antiviral drug and vaccine development  and is known for his contributions in clinical research into the virology and therapeutic treatments of HIV infection and other viruses. He also served as the Chief of Infectious Disease, Vice Chair of Medicine and Professor of Medicine, Immunology and Microbiology at the University of Maryland. He served in the US Army from 1977-1996 as a physician and medical researcher and retired as a Colonel in 1996.