Skip Navigation

H. Morgan Scott


Curriculum Vitae

Send Email

Phone: (979) 847-6197

Mailstop: 4467

Department: VTPB

Photo of Scott, H. Morgan


  • Postdoc Public Health, University of Alberta, Canada 1999
  • PhD Epidemiology, University of Guelph 1998
  • DVM Veterinary Medicine, University of Saskatchewan 1988

Scholarly Interests

Dr. H. Morgan Scott is a graduate veterinarian holding a PhD in epidemiology and post-doctoral training in public health. In addition to private veterinary practice, he has worked in both government (food safety surveillance) and academic settings. He is currently professor of epidemiology in the Department of Veterinary Pathobiology at Texas A&M University. He was recruited here in 2014 as part of the Texas A&M University System Chancellor’s Research Initiative and the University President’s Initiative on One Health and Infectious Diseases. He relocated from Kansas State University, where he previously held the E.J. Frick Professorship in Veterinary Medicine. Much of his research emphasis has been on studying factors impacting antimicrobial resistance among commensal and pathogenic enteric bacteria in food animal production systems, with a program spanning the realm from the molecular to the sociological. In particular, he is interested in applying both epidemiological and ecological approaches to quantify the emergence, propagation, dissemination, and persistence of resistant enteric bacterial strains in integrated populations of animals, their food products, and humans. Using this knowledge, he hopes to identify opportunities to prevent and intervene against resistance among enteric pathogens in animal agriculture; preferably, by developing readily adoptable and cost-effective management practices suited to modern animal and food production systems.


Role of house flies in the ecology of Enterococcus faecalis from wastewater treatment facilities.
Doud CW, Scott HM, Zurek L.
Microb Ecol. 2014 Feb; 67(2):380-91.
PMID: 24337146 [PubMed - indexed for MEDLINE]
Comparison of antimicrobial susceptibility among Clostridium difficile isolated from an integrated human and swine population in Texas.
Norman KN, Scott HM, Harvey RB, Norby B, Hume ME.
Foodborne Pathog Dis. 2014 Apr; 11(4):257-64.
PMID: 24320797 [PubMed - in process]
Increased mortality in groups of cattle administered the ß-adrenergic agonists ractopamine hydrochloride and zilpaterol hydrochloride.
Loneragan GH, Thomson DU, Scott HM.
PLoS One. 2014 ; 9(3):e91177.
PMID: 24621596 [PubMed - in process]
Comparative phenotypic and genotypic characterization of temporally related nontyphoidal Salmonella isolated from human clinical cases, pigs, and the environment in North Carolina.
Keelara S, Scott HM, Morrow WM, Hartley CS, Griffin DL, Gebreyes WA, Thakur S.
Foodborne Pathog Dis. 2014 Feb; 11(2):156-64.
PMID: 24237109 [PubMed - indexed for MEDLINE]
Effects of chlortetracycline and copper supplementation on antimicrobial resistance of fecal Escherichia coli from weaned pigs.
Agga GE, Scott HM, Amachawadi RG, Nagaraja TG, Vinasco J, Bai J, Norby B, Renter DG, Dritz SS, Nelssen JL, Tokach MD.
Prev Vet Med. 2014 Jun; 114(3-4):231-46.
PMID: 24655578 [PubMed - in process]
Impact of treatment strategies on cephalosporin and tetracycline resistance gene quantities in the bovine fecal metagenome.
Kanwar N, Scott HM, Norby B, Loneragan GH, Vinasco J, Cottell JL, Chalmers G, Chengappa MM, Bai J, Boerlin P.
Sci Rep. 2014 May; 4:5100.
PMID: 24872333 [PubMed - in process]
Ordinary Least Squares Regression of Ordered Categorical Data: Inferential Implications for Practice
Beth Larrabee, H. Morgan Scott, Nora M. Bello .
Journal of Agricultural, Biological, and Environmental Statistics . 2014 ; .
blaCTX-M-32 on an IncN plasmid in Escherichia coli from beef cattle in the United States.
Cottell JL, Kanwar N, Castillo-Courtade L, Chalmers G, Scott HM, Norby B, Loneragan GH, Boerlin P.
Antimicrob Agents Chemother. 2013 Feb; 57(2):1096-7.
PMID: 23165469 [PubMed - indexed for MEDLINE]
A multivariable assessment quantifying effects of cohort-level factors associated with combined mortality and culling risk in cohorts of U.S. commercial feedlot cattle.
Babcock AH, Cernicchiaro N, White BJ, Dubnicka SR, Thomson DU, Ives SE, Scott HM, Milliken GA, Renter DG.
Prev Vet Med. 2013 Jan; 108(1):38-46.
PMID: 22871305 [PubMed - indexed for MEDLINE]
Occurrence of the transferable copper resistance gene tcrB among fecal enterococci of U.S. feedlot cattle fed copper-supplemented diets.
Amachawadi RG, Scott HM, Alvarado CA, Mainini TR, Vinasco J, Drouillard JS, Nagaraja TG.
Appl Environ Microbiol. 2013 Jul; 79(14):4369-75.
PMID: 23666328 [PubMed - indexed for MEDLINE]
Effects of ceftiofur and chlortetracycline treatment strategies on antimicrobial susceptibility and on tet(A), tet(B), and bla CMY-2 resistance genes among E. coli isolated from the feces of feedlot cattle.
Kanwar N, Scott HM, Norby B, Loneragan GH, Vinasco J, McGowan M, Cottell JL, Chengappa MM, Bai J, Boerlin P.
PLoS One. 2013 ; 8(11):e80575.
PMID: 24260423 [PubMed - indexed for MEDLINE]
Utilizing qualitative methods in survey design: examining Texas cattle producers' intent to participate in foot-and-mouth disease detection and control.
Delgado AH, Norby B, Dean WR, McIntosh WA, Scott HM.
Prev Vet Med. 2012 Feb; 103(2-3):120-35.
PMID: 21968089 [PubMed - indexed for MEDLINE]
Predictors of differences in the perception of antimicrobial resistance risk in the treatment of sick, at-risk, and high-risk feedlot cattle.
Jan JS, McIntosh WA, Dean W, Scott HM.
Prev Vet Med. 2012 Sep; 106(1):24-33.
PMID: 22391020 [PubMed - indexed for MEDLINE]
A network-based meta-population approach to model Rift Valley fever epidemics.
Xue L, Scott HM, Cohnstaedt LW, Scoglio C.
J Theor Biol. 2012 Aug; 306:129-44.
PMID: 22564391 [PubMed - indexed for MEDLINE]
A population-based case-control study of occupational exposure to acids and the risk of lung cancer: evidence for specificity of association.
Soskolne CL, Jhangri GS, Scott HM, Brenner DR, Siemiatycki J, Lakhani R, Gérin M, Dewar R, Miller AB, Risch HA.
Int J Occup Environ Health. 2011 Jan; 17(1):1-8.
PMID: 21344813 [PubMed - indexed for MEDLINE]
Selection of fecal enterococci exhibiting tcrB-mediated copper resistance in pigs fed diets supplemented with copper.
Amachawadi RG, Shelton NW, Shi X, Vinasco J, Dritz SS, Tokach MD, Nelssen JL, Scott HM, Nagaraja TG.
Appl Environ Microbiol. 2011 Aug; 77(16):5597-603.
PMID: 21705534 [PubMed - indexed for MEDLINE]
Characterization of a new disease syndrome associated with porcine circovirus type 2 in previously vaccinated herds.
Cino-Ozuna AG, Henry S, Hesse R, Nietfeld JC, Bai J, Scott HM, Rowland RR.
J Clin Microbiol. 2011 May; 49(5):2012-6.
PMID: 21346043 [PubMed - indexed for MEDLINE]
The Role of Trust and Moral Obligation in Beef Cattle Feed-lot Veterinarians’ Contingent Adoption of Antibiotic Metaphylaxis Recommendations
Wesley R. Dean, William Alex McIntosh, H. Morgan Scott and Kerry S. Barling.
International Journal of Sociology of Agriculture and Food. 2011 ; 18, 104-120.
Clostridium difficile in retail meat and processing plants in Texas.
Harvey RB, Norman KN, Andrews K, Norby B, Hume ME, Scanlan CM, Hardin MD, Scott HM.
J Vet Diagn Invest. 2011 Jul; 23(4):807-11.
PMID: 21908329 [PubMed - indexed for MEDLINE]
The effect of ocular blinkers on the horses' reactions to four different visual and audible stimuli: results of a crossover trial.
Dziezyc J, Taylor L, Boggess MM, Scott HM.
Vet Ophthalmol. 2011 Sep; 14(5):327-32.
PMID: 21929610 [PubMed - indexed for MEDLINE]
Prevalence and patterns of antimicrobial resistance in Campylobacter spp isolated from pigs reared under antimicrobial-free and conventional production methods in eight states in the Midwestern United States.
Rollo SN, Norby B, Bartlett PC, Scott HM, Wilson DL, Fajt VR, Linz JE, Bunner CE, Kaneene JB, Huber JC Jr.
J Am Vet Med Assoc. 2010 Jan; 236(2):201-10.
PMID: 20074013 [PubMed - indexed for MEDLINE]
Risk factors associated with Neospora caninum seropositivity in randomly sampled Canadian dairy cows and herds.
Vanleeuwen JA, Haddad JP, Dohoo IR, Keefe GP, Tiwari A, Scott HM.
Prev Vet Med. 2010 Feb; 93(2-3):129-38.
PMID: 20018395 [PubMed - indexed for MEDLINE]
Distribution and interspecies contact of feral swine and cattle on rangeland in south Texas: implications for disease transmission.
Cooper SM, Scott HM, de la Garza GR, Deck AL, Cathey JC.
J Wildl Dis. 2010 Jan; 46(1):152-64.
PMID: 20090028 [PubMed - indexed for MEDLINE]
Temporal distributions of respiratory disease events within cohorts of feedlot cattle and associations with cattle health and performance indices.
Babcock AH, Renter DG, White BJ, Dubnicka SR, Scott HM.
Prev Vet Med. 2010 Dec; 97(3-4):198-219.
PMID: 20947196 [PubMed - indexed for MEDLINE]
The Relationship between Moral Obligations to Others and Others Influence in Decisions to Utilize Antibiotics in Feedlot Cattle
Jan, Jie-Sheng*, William A. McIntosh, Wesley Dean, and Morgan Scott.
Journal of Rural Social Science. 2010 ; 25(2): 122-138.
Feedlot veterinarians' moral and instrumental beliefs regarding antimicrobial use in feedlot cattle
McIntosh, W. M. A., Schulz, S., Dean, W., Scott, M. H., Barling, K. S. and Takei, I..
J. Community. Appl. Soc. Psychol.. 2009 ; 19: 51–67. doi: 10.1002/casp.976.
Quantification of the bla(CMY-2) in feces from beef feedlot cattle administered three different doses of ceftiofur in a longitudinal controlled field trial.
Alali WQ, Scott HM, Norby B, Gebreyes W, Loneragan GH..
Foodborne Pathog Dis.. 2009 Oct; 6(8):917-24.
PMID: 19622032 []
Varied prevalence of Clostridium difficile in an integrated swine operation.
Norman KN, Harvey RB, Scott HM, Hume ME, Andrews K, Brawley AD.
Anaerobe. 2009 Dec; 15(6):256-60.
PMID: 19778624 [PubMed - indexed for MEDLINE]
Relationship between level of antibiotic use and resistance among Escherichia coli isolates from integrated multi-site cohorts of humans and swine.
Alali WQ, Scott HM, Christian KL, Fajt VR, Harvey RB, Lawhorn DB.
Prev Vet Med. 2009 Aug; 90(3-4):160-7.
PMID: 19501924 [PubMed - indexed for MEDLINE]
Geostatistical analysis of biomarkers of genotoxicity in cattle, Bos taurus and Bos taurus x Bos indicus, sentinels near industrial facilities.
Bissett W Jr, Smith R, Adams LG, Field R, Moyer W, Phillips T, Scott HM, Thompson JA.
Ecotoxicology. 2009 Jan; 18(1):87-93.
PMID: 18763035 [PubMed - indexed for MEDLINE]
An evaluation of the health status of the Lavaca Bay, Texas ecosystem using Crassostrea virginica as the sentinel species.
Bissett W Jr, Smith R, Garry Adams L, Field R, Moyer W, Phillips T, Morgan Scott H, Wade T, Sweet S, Thompson JA.
Mar Pollut Bull. 2009 Feb; 58(2):280-6.
PMID: 19167734 [PubMed - indexed for MEDLINE]
Longitudinal study of antimicrobial resistance among Escherichia coli isolates from integrated multisite cohorts of humans and swine.
Alali WQ, Scott HM, Harvey RB, Norby B, Lawhorn DB, Pillai SD.
Appl Environ Microbiol. 2008 Jun; 74(12):3672-81.
PMID: 18424541 [PubMed - indexed for MEDLINE]

Request Update