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.


Adis Dijab, DVM
National Director, Agriculture Select Agent Services
Animal and Plant Health Inspection Service

Dr. Adis Dijab is the National Director of the Agriculture Select Agent Services (AgSAS) at the United States Department of Agriculture (USDA)’s Animal and Plant Health Inspection Service (APHIS), Veterinary Services (VS). In this position, he 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. Dijab received his Doctor of Veterinary Medicine degree from Zagreb University, College of Veterinary Medicine (Croatia) in 1996. After gaining experience through eight years as a small animal veterinary practitioner in Kentucky, Dr. Dijab began his APHIS career in 2004. Over the last 14 years, he has served in leadership roles in USDA’s Food Safety Inspection Service and APHIS’ Veterinary Services, from field veterinary medical officer and area veterinarian-in-charge, to Air and Sea Port Services Director and National Director of Animal Product Permitting and Negotiation Services.