Dr. H. Morgan Scott
DVM (with Distinction) - University of Saskatchewan (1988)
PhD - University of Guelph (1998)
Post-doctoral Fellow - University of Alberta (1999)
Phone (785) 532 4602
I serve the greater community of public health, food and agriculture, education and research through active participation and service on local, state, national and international boards of organizations relevant to my areas of expertise. I have represented the United States on several European Union – U.S. food safety initiatives evaluating science policy as related to foodborne pathogens and antimicrobial resistance; I currently serve on the World Health Organization’s (WHO) Advisory Group on Integrated Surveillance of Antimicrobial Resistance (AGISAR).
I teach the advanced epidemiological methods and data analysis to graduate students, as well as contributing to the DVM teaching of epidemiology, food safety, and public health. I also teach a course on disease detection, surveillance, and risk asssessment for animal health and food safety applications.
My expertise centers on valid analytical and descriptive epidemiologic study design, conduct, and analysis in both public health and veterinary fields. I am particularly interested in applying empirical data arising from appropriately designed field studies to developing models of the microbial ecology of foodborne pathogens and antimicrobial resistance in food production systems. My present research interests include: food safety issues such as pre-harvest ecology and management of antimicrobial-resistant bacteria and foodborne enteric pathogens, the epidemiology of Johne's disease (Mycobacterium avium subsp.paratuberculosis) in ruminants, decision-support systems for emerging and zoonotic disease defense, and studying the potential impacts of global climate and ecosystem changes on animal and human health.
Selected Publications (2005 to present)
Scott, H.M., Campbell, L.D., Harvey, R.B., Bischoff, K.M., Alali, W.Q., Barling, K.S., Anderson, R.C. (2005) Patterns of antimicrobial resistance among commensal Escherichia coli isolated from integrated multi-site housing and worker cohorts of humans and swine. Foodborne Pathogens and Disease, 2, 24-37.
Graham, S.L., Barling, K.S, Waghela, S., Scott, H.M., Thompson, J.A. (2005) Spatial distribution of antibodies to Salmonella enterica serovar Typhimurium O antigens in bulk milk from Texas dairy herds. Preventive Veterinary Medicine, 69, 53-61.
Harvey, R.B., Hume, M.E., Droleskey, R.E., Edrington, T.S., Sheffield, C.L., Callaway, T.R., Ziprin, R.L., Scott, H.M., Anderson, R.C., Nisbet, D.J. (2005) Further characterization of Campylobacter isolated from U.S. dairy cows. Foodborne Pathogens and Disease, 2, 182-187.
Scott, H.M., Schouten, M.J., Gaiser, J.C., Belschner, A.P., Jordan, E.R. (2005) Effect of intrauterine administration of ceftiofur on fertility and risk of culling in postparturient cows with retained fetal membranes, twins, or both. Journal of the American Veterinary Medical Association, 226, 2044-2052.
Strickland, S.J.*, Scott, H.M., Libal, M.C., Roussel Jr., A.J., Jordan, E.R. (2005) Effects of seasonal climatic conditions on the diagnosis of Mycobacterium avium subspecies paratuberculosis in dairy cattle. Journal of Dairy Science, 88, 2432-2440.
Poole, T.L., Hume, M.E., Campbell, L.D., Scott, H.M., Alali, W.Q., Harvey, R.B. (2005) Characterization of vancomycin-resistant Enterococcus faecium isolated from community wastewater within a semi-closed agri-food system. Antimicrobial Agents and Chemotherapy, 49, 4382-4385.
Campbell, L.D., Scott, H.M., Bischoff, K.M., Anderson, R.C., Harvey, R.B. (2005) Prevalence of Class 1 integrons and antimicrobial resistance gene cassettes among enteric bacteria found in multi-site group-level cohorts of humans and swine. Journal of Food Protection, 68, 2693-2697.
Dean, W.R., Scott, H.M. (2005) Antagonistic synergy: process and paradox in the development of new agricultural antimicrobial regulations. Agriculture and Human Values, 22, 479-489.
Scott, H.M., Sorensen, O., Wu, J., Chow, E., Manninen, K., VanLeeuwen, J. (2006) Seroprevalence of Mycobacterium avium subspecies paratuberculosis, Neospora caninum, Bovine leukemia virus, and Bovine viral diarrhea virus infection among dairy cattle and herds in Alberta and agroecological risk factors associated with seropositivity. Canadian Veterinary Journal, 47, 981-992.
Tiwari, A., VanLeeuwen, J.A., Dohoo, I.R., Keefe, G.P., Haddad, J.P., Tremblay, R., Scott, H.M., Whiting, T. (2007) Production effects of pathogens causing bovine leukosis, bovine viral diarrhea, paratuberculosis, and neosporosis. Journal of Dairy Science, 90, 659-669.
Scott, H.M., Fosgate, G.T., Libal, M.C., Sneed, L.W., Erol, E., Angulo, A.B., Jordan, E.R. (2007) Field testing of an enhanced direct-fecal polymerase chain reaction procedure, bacterial culture of fecal samples, and a serum enzyme-linked immunosorbent assay for detecting Mycobacterium avium subsp paratuberculosis infection in adult dairy cattle. American Journal of Veterinary Research, 68, 236-245.
Scott, H.M., Sorensen, O., Wu, J., Chow, E., Manninen, K. (2007) Seroprevalence and agroecological risk factors for Mycobacterium avium subspecies paratuberculosis and Neospora caninum infection among beef cow-calf herds in Alberta, Canada. Canadian Veterinary Journal, 48, 397-406.
Lowrance, T.C., Loneragan, G.H., Kunze, D.J., Platt, T.M., Ives, S., Scott, H.M., Norby, B., Echeverry, A., Brashears, M.M. (2007) Administration of ceftiofur crystalline-free acid and temporally associated changes in susceptibility of Escherichia coli in feedlot cattle. American Journal of Veterinary Research, 68, 501-507.
Fosgate, G.T., Scott, H.M., Jordan, E.R. (2007) Development of a method for Bayesian nonparametric ROC analysis with application to an ELISA for Johne’s disease in dairy cattle. Preventive Veterinary Medicine, 81, 178-193.
Vincent, V.*, Scott, H.M., Harvey, R.B., Alali, W.Q.,*, Hume, M.E. (2007) Novel surveillance of Salmonella enterica serotype Heidelberg epidemics in a closed community. Foodborne Pathogens and Disease, 4, 375-385.
Thompson, J.A., Scott, H.M.. (2007) Bayesian kriging of seroprevalence to Mycobacterium avium subspecies paratuberculosis and Neospora caninum in Alberta beef and dairy cattle. Canadian Veterinary Journal, 48, 1281-1285.
Beier, R.C., Duke, S.E., Ziprin, R.L., Harvey, R.B., Hume, M.E., Poole, T.L., Scott, H.M., Highfield, L.D., Alali, W.Q., Andrews, K., Anderson, R.C., Nisbet, D.J. (2008) Antibiotic and disinfectant susceptibility profiles of vancomycin-resistant Enterococcus faecium (VRE) isolated from community wastewater in Texas. Bulletin of Environmental Contamination and Toxicology, 80, 188-194.
Alali, W.Q., Scott, H.M., Harvey, R.B., Norby, B., Lawhorn, D.B., Pillai, S.D. (2008) Longitudinal study of antimicrobial resistance among Escherichia coli isolated from integrated multi-site group cohorts of humans and swine. Applied and Environmental Microbiology, 74, 3672-3681.
Platt, T.M., Loneragan, G.H., Scott, H.M., Norby, B., Thomson, D.U., Brown, M.S., Ives, S.E., Brashears, M.M. (2008) Antimicrobial drug susceptibility of enteric bacteria recovered from feedlot cattle in response to chlortetracycline administration. American Journal of Veterinary Research, 69, 988-996.
Tiwari, A., VanLeeuwen, J.A., Dohoo, I.R., Keefe, G.P., Haddad, J.P., Scott, H.M., Whiting, T. (2008) Risk factors associated with Mycobacterium avium subspecies paratuberculosis seropositivity in Canadian dairy cows and herds. Preventive Veterinary Medicine, 88, 32-41.
McIntosh, W.A., Schulz, S., Dean, W.R., Scott, H.M., Barling, K.S., Takei, I. (2009) Feedlot veterinarians’ moral and instrumental beliefs regarding antimicrobial use in feedlot cattle. Journal of Community and Applied Social Psychology,19, 51-67.
W. Q. Alali, H. M. Scott, K.L. Christian, V.R. Fajt, R.B. Harvey, D.B. Lawhorn. (2009) Relationship between the level of antibiotic use and resistance among Escherichia coli isolated from integrated multi-site cohorts of humans and swine. Preventive Veterinary Medicine, 90, 160-167.
Alali, W.Q., Scott, H.M., Norby, B., Gebreyes, W., Loneragan, G.H. (2009) Quantification of the blaCMY2 in feces from beef feedlot cattle administered three different doses of ceftiofur crystalline-free acid in a longitudinal controlled field trial. Foodborne Pathogens and Diseases, 6, 917-924.
Norman, K.N., Harvey, R.B., Scott, H.M., Hume, M.E., Andrews, K., Brawley, A.D. (2009) Varied prevalence of Clostridium difficile in an integrated swine operation. Anaerobe, 15, 259-260.
Rollo, S.N., Norby, B., Bartlett, P.C., Scott, H.M., Wilson, D.L., Libal, M.C., Fajt, V.R., Linz, J.E., Bunner, C.E., Kaneene, J.B., Huber, J.C. (2010) Prevalence and antimicrobial susceptibility of Campylobacter spp. isolates from finishers reared on antimicrobial-free and conventional swine farms in the Midwest. Journal of the American Veterinary Medical Association, 236, 201-210.
VanLeeuwen, J.A., Haddad, J.P., Dohoo, I.R., Keefe, G.P., Tiwari, A., Scott, H.M., Whiting, T. (2010) Risk factors associated with Neospora caninum seropositivity in randomly sampled Canadian dairy cows and herds. Preventive Veterinary Medicine, 93, 129-138.
Cooper, S.M., Scott, H.M., de la Garza, G.R., Deck, A.L., Cathey, J.C. (2010) Distribution and inter-species contact of feral swine and cattle on rangeland in south Texas: implications for disease transmission. Journal of Wildlife Diseases, 46, 152-164.
Alali, W.Q., Scott, H.M., Norby, B. (2010) Assessing the similarity of antimicrobial resistance phenotypes among fecal Escherichia coli isolates from two aggregated occupational cohorts of humans versus swine using cluster analysis and multivariate statistics. Preventive Veterinary Medicine, 94, 77-83.
Jan, J.S., McIntosh, W.A., Scott, H.M., Dean, W.R. (2010) The relationship between moral obligations to others and others’ influence in decisions to utilize antibiotics in feedlot cattle. Journal of Rural Social Sciences, 25, 122-148.
Villarino, M.A., Scott, H.M., Jordan, E.R. (2011) Influence of parity at time of detection of serologic antibodies to Mycobacterium avium subspecies paratuberculosis on reduction in daily and lifetime milk production in Holstein cows. Journal of Animal Science, 89, 267-276.
Soskolne, C.L., Jhangri, G.S., Scott, H.M., Brenner, D.R., Siemiatycki, J., Lakhani, R., Gérin, M., Dewar, R., Miller, A.B., Risch, H.A. (2011) Population-based case-control study of occupational exposure to acids and the risk of lung cancer: evidence for specificity of association. International Journal of Occupational and Environmental Health, 17, 1-8.