Gregory C. Gray

Gregory C. Gray, MD, MPH, FIDSA is a Professor in Infectious Disease Epidemiology at the University of Texas Medical Branch (UTMB) in Galveston, Texas, with appointments across multiple departments including Internal Medicine (Infectious Diseases), Microbiology & Immunology, and Global Health & Emerging Diseases.

Dr. Gray has conducted epidemiological studies of infectious diseases for over 25 years across five continents, with a particular focus on occupational disease transmission, especially respiratory viruses. His research has examined farmers, veterinarians, turkey workers, swine workers, poultry workers, horse workers, cattle workers, hunters, and military personnel. He pioneered the Millennium Cohort Study, a prospective cohort study of approximately 300,000 people projected to continue through 2068, and has led numerous large-scale vaccine trials.

As a strong advocate for the One Health approach, Dr. Gray has established One Health centers in the USA, Romania, and China, and developed four graduate programs in One Health (PhD, MHS, and certificates). His recent research focuses on zoonotic spillover events, universal influenza vaccines, and coronavirus detection in agricultural settings, with numerous publications in 2024-2025 addressing H5N1 avian influenza, respiratory virus transmission, and environmental health impacts.

Selected honors include:

• Department of Defense Legion of Merit Medal
• Secretary of Defense Medal for Outstanding Public Service
• Medal of Honor from Mongolia's Minister of Health
• The Peace Medal awarded by the President of Mongolia
• University of Texas Medical Branch Robert E. Shope, MD Professorship

Dr. Gray has authored over 350 peer-reviewed manuscripts cited more than 21,000 times (H-index 76). His current research portfolio includes multiple active grants from the USDA, Fogarty International Center, and private industry focusing on zoonotic disease surveillance, influenza vaccines, and coronavirus detection in agricultural settings. He has mentored numerous students and established international collaborations across six continents.