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Sara Lawhon

Associate Professor

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Department: VTPB

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  • Ph.D. Comparative Biomedical Science, North Carolina State University 2003
  • D.V.M. Veterinary Medicine, Texas A&M University 1997
  • B.S. Veterinary Science, Texas A&M University 1993
  • B.S. Biomedical Science, Texas A&M University 1991


  • Diplomate, American College of Veterinary Microbiologists
  • Texas Board of Veterinary Medical Examiners
  • Texas Veterinary Medical License: 8152

Scholarly Interests

My work centers on understanding how bacteria cause disease in people and animals with the goal of improving animal and human health. My laboratory group studies antimicrobial resistance and stewardship and Salmonella and Staphylococcus pathogenesis. We are particularly interested in how bacteria communicate with each other (quorum sensing) and how they respond to environmental signals found in the host.


Count of generic Escherichia coli on spinach at the preharvest level determined by the multi-factorial effect of ambient temperature, precipitation, farm management and environmental factors.
Park, S., Navratil, S., Gregory, A., Bauer, A., Sinath, I., Szonyi, B., Nightingale, K., Anciso, J., Jun, M., Han, D., Lawhon, S., Ivanek, R.
Applied and Environmental Microbiology . 2015
Plane of nutrition influences the performance, innate leukocyte responses, and resistance to an oral Salmonella enterica serotype Typhimurium challenge in Jersey calves.
Ballou, M.A., Hanson, D.L., Cobb, C.J., Obeidat, B.S., Sellers, M.D., Pepper-Yowell, A.R, Carroll, J.A., Earleywine, T.J., Lawhon, S.D.
Journal of Dairy Science. 2015
Amikacin Resistance in Staphylococcus pseudintermedius Isolated from Dogs.
Gold RM, Cohen ND, Lawhon SD
J Clin Microbiol. 2014 52(10):3641-6.
Intra-articular infection by Scedosporium prolificans in a horse
Lawhon, S.D., Sutton, D.A., Halbert, N.D., Watkins, J.P.
Journal of Equine Veterinary Science . 2011 31(31):696-699.
Streptococcus shiloi, the name for an agent causing septicemic infection in fish, is a junior synonym of Streptococcus iniae
Eldar, A., Frelier, P. F., Assenta, L., Varner, P.W., Lawhon, S., Bercovier, H.
Int J Syst Bacteriol.. 1995 45(4):840-2.
The Effect of Storage Time, Temperature, and Transport Tube Type on Canine Urine Samples Submitted for Quantitative Urine Culture.
Duff, C. Bishop, M., Pack, J.D.2, Cook, A.K., Lawhon, S.D.
Journal of the American Veterinary Medical Association .

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