Samuel S. Edwin, Ph.D.
Director, Division of Select Agents and Toxins
Centers for Disease Control and Prevention
Samuel Edwin is the director of the Division of Select Agents and Toxins (DSAT) in the Office of Public Health Preparedness and Response (OPHPR) at the Centers for Disease Control and Prevention (CDC). In this role, he oversees two regulatory programs—the Federal Select Agent Program and the Import Permit Program—to ensure that laboratory work with infectious biological agents and toxins is conducted as safely and securely as possible.
Dr. Edwin has worked in biomedical research for more than 30 years. Prior to his appointment as DSAT director, from 2008 to 2016 he served as the responsible official and biological surety officer for the Select Agent Program at the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID) at Fort Detrick, MD. In this role, he was responsible for ensuring all laboratory work with biological select agents and toxins complied with federal regulations.
Before turning to program administration, Dr. Edwin conducted biomedical research with a focus on maternal-fetal medicine. He spent 12 years at the National Institute of Child Health and Human Development (NICHD) at the National Institute of Health (NIH) and another twelve years in the Department of Obstetrics and Gynecology at the University of Utah Medical Center.
Dr. Edwin received his Ph.D. in physiology from Wayne State University School of Medicine, and his bachelor’s degree in zoology from Brigham Young University. He has authored or co-authored more than 150 scientific publications in peer-reviewed national and international journals.
Freeda E. Isaac, DVM
Director, Agriculture Select Agent Services
Animal and Plant Health Inspection Service
Freeda Isaac is the director of the Agriculture Select Agent Services (AgSAS) at the United States Department of Agriculture (USDA)’s Animal and Plant Health Inspection Service (APHIS). Serving in this position since January 2008, she manages a staff that works on developing regulations and policies for the importation and interstate movement of organisms and vectors, and implementing the requirements of the Federal Select Agent Program.
Dr. Isaac received her Doctor of Veterinary Medicine degree from the Virginia – Maryland Regional College of Veterinary Medicine in 1989 and started in federal service with the Food Safety Inspection Service as a supervisory veterinary medical officer, serving in this role from 1989 to 2002. From 1992 to 2002, she was a field veterinary medical officer with APHIS Veterinary Services, initially in Pennsylvania and then in Maryland. In this position, she was trained as a foreign animal disease diagnostician and conducted numerous field investigations of suspected foreign animal disease cases on farms in Maryland and Delaware. She was also trained as a biosafety inspector and conducted inspections of BSL-2 and BSL-3 laboratories in the Washington D.C., Maryland, and Virginia area during this time.
After serving nine years in the Maryland field office, she joined APHIS Veterinary Service headquarters staff in 2002 as a senior staff veterinarian with the National Center for Import and Export, and moved on to become an assistant director of animal imports in 2006.