U.S. flag An official website of the United States government
  1. Home
  2. Animal & Veterinary
  3. Science & Research
  4. Gregory Tyson
  1. Science & Research

Gregory Tyson PhD.

Gregory Tyson PhD.
Gregory Tyson PhD.

Division of Animal and Food Microbiology


Dr. Gregory Tyson is a research microbiologist in the Division of Animal and Food Microbiology (DAFM). He received his PhD in microbiology from Northwestern University and joined the FDA in 2014. His research primarily supports the National Antimicrobial Resistance Monitoring System (NARMS), which performs One Health antimicrobial resistance surveillance of foodborne pathogens.


Dr. Tyson’s research focuses on several areas, including

  • Using next-generation sequencing to understand antimicrobial resistance of foodborne pathogens such as Salmonella, E. coli, Campylobacter, and Enterococcus
  • Tracking emerging antimicrobial resistance to drugs of human health importance
  • Source attribution of human and animal illnesses caused by resistant pathogens

Select Publications

Ceric O, Tyson GH, Goodman LB, Mitchell PK, et al. One Health approach for antimicrobial resistance monitoring of animal pathogens with WGS: Vet-LIRN collaborative project with Veterinary Diagnostic Laboratories in United States and Canada. BMC Vet Res. 2019 May 6;15(1):130.

Tyson GH, Sabo JL, Hoffman M, Hsu C, Mukherjee S, Tillman G, Wasilenko JL, Haro J, Simmons M, Dessai U, McDermott PF. Transmissible Linezolid Resistance in Enterococcus in the United States. J Antimicrob Chemother. 2018 Dec 1;73(12):3254-3258.

Tyson GH, Bodeis-Jones S, Caidi H, Cook K, Dessai U, Haro J, McCullough AE, Meng J, Morales CA, Plumblee Lawrence J, Tillman GE, Winslow A, Miller RA. Proposed Epidemiological Cut-off Values for Ceftriaxone, Cefepime, and Colistin in Salmonella. Foodborne Pathog Dis. 2018 Nov;15(11):701-704.

Tyson GH, Sabo JL, Rice-Trujillo C, Hernandez J, McDermott PF. Whole-genome sequencing based characterization of antimicrobial resistance in Enterococcus. Pathog Dis. 2018 Mar 1;76(2).

Tyson GH, Zhao S, Li C, Ayers S, Sabo JL, Lam C, Miller RA, McDermott PF. Establishing Genotypic Cutoff Values to Measure Antimicrobial Resistance in Salmonella. Antimicrob Agents Chemother. 2017 Feb 23;61(3).

Contact Information
Gregory Tyson
+1 (240) 402-5426
+1 (301) 210-4685