Ohio State Navbar

People

Wondwossen Gebreyes, DVM, PhD


Staff photo

1920 Coffey Rd
Columbus, OH 43210

Phone: (614) 292-9559

Email: gebreyes.1@osu.edu

 

Current OSU Appointments

Professor, Veterinary Preventive Medicine

Professor, COPH -Division of Epidemiology

 

Biographical

I am the Director of Infectious Diseases Molecular Epidemiology Laboratory (IDMEL) housed in the Department of Veterinary Preventive Medicine at the College of Veterinary Medicine. I also have an additional courtesy appointment at the Divison of Epidemiology in the College of Public Health. In addition, I serve as the Director for Global Health Programs for the College of Veterinary Medicine. My research interest is to explore how foodborne and nosocomial pathogens affect animal and human health, and to unravel the epidemiology and molecular mechanisms of antimicrobial resistant and hypervirulent strains. I am the coordinator of two graduate courses: Foodborne Pathogens Epidemiology and Food Systems (VPM722) and Molecular Epidemiology of Infectious Diseases (VPM700). Additional scholarly activities that I am actively engaged in include Global Capacity Building in Food Safety, Zoonotic Diseases, and Biotechnology. Specific regions of interest in these activities include eastern Africa, Brazil and Asia-pacific, mainly Thailand. I serve in various national and global professional engagements. I served as a keynote speaker in the Asian-Pacific Food Safety and Zoonosis symposium (2009, Chiang Mai, Thailand) and was invited as an International Scientific Chair at the IGA Congress (2010, Recife, Brazil). Additionally, I am involved in program review panels such as AAAS (Washington, DC) and COMET (Austria). I aim to contribute to teaching, research and other professional scholarly activities in the areas of prevention of foodborne pathogens and other zoonotic diseases to make a difference in the world via contributing to food safety and security, impact success to professional, graduate students and trainees and ultimately make an impact to global health. For more details on research activities, please visit: http://vet.osu.edu/IDMEL

Academic Advising

2005 - 2009 Daniel Tadesse The Ohio State University. Graduated 2009. Molecular Epidemiology Of Campylobacter And Yersinia Enterocolitica Isolates From Pigs Reared In Conventional And Antibiotic Free Farms From Different Geographic Regions.
2006 - 2009 Prapas Patchanee The Ohio State University. Graduated 2008. Epidemiology Of Salmonella Enterica Related To Swine Production System And Food Safety.
 

Certifications

present Diplomate: American College of Veterinary Preventive Medicine
 

Chapters in Books

Cowen, P. D.E. Hansen, C.L. Hofacre, E.J. Noga, D.G. Pyburn, and W.A. Gebreyes. "Food Animal Industry Activites in Food Safety." In Microbial Food Safety in Animal Agriculture: Current Topics. 19-34. Ames, IA: Blackwell Publishing, January 2003.

Gebreyes WA. "Phenotypic subtyping of foodborne pathogens." In Tracing Pathogens in the Food Chain. Edited by Stanley Brul et al.. -. Cambridge: Woodhead Publishing, January 2010.

 

Conferences

Thakur, S. and Gebreyes, W.A.. "Prevalence, antimicrobial resistance and genotypic diversity of Campylobacter coli isolated from antimicrobial-free swine production systems." 6th International Symposium on Epidemiology and Control of Food-borne pathogens in Pork. (January 2005). .

Thakur, S. and Gebreyes, W.A.. "Comparative genotyping of Campylobacter coli using Multi Locus Sequence Typing and Pulsed Field Gel Electrophoresis." 6th International Symposium on Epidemiology and Control of Food-borne pathogens in Pork. (January 2005). .

Robbins, R., Lowman, H. and Gebreyes, W. A.. "Developing Real-time PCR Assay for Detection of Multi-drug Resistant Salmonella strains in Pigs." 6th International Symposium on Epidemiology and Control of Food-borne pathogens in Pork. (January 2005). .

Gebreyes, W.A., Thakur, S. and Morrow, M.W.E. "Prevalence and antimicrobial resistance of Salmonella isolated from conventional and antimicrobial-free swine herds in North Carolina." 6th International Symposium on Epidemiology and Control of Food-borne pathogens in Pork. (January 2005). .

Dorr, P., Tadesse, D. and Gebreyes, W.A.. "Evaluation of Phenotypic and Genotypic Approaches as predictors of Salmonella strains of Clinical and Non-clinical Origin." 6th International Symposium on Epidemiology and Control of Food-borne pathogens in Pork. (January 2005). .

Dorr, P. and Gebreyes, W.A.. "The Role of Truck-wash Practices in Dissemination of Salmonella and Campylobacter in Commercial Swine Production." International Symposium on Epidemiology and Control of Food-borne pathogens in Pork. (January 2005). .

Davies, P., Funk, J. and Gebreyes, W.A.. "Differential translocation of Salmonella serovars to mesenteric lymph nodes of pigs." 6th International Symposium on Epidemiology and Control of Food-borne pathogens in Pork. (January 2005). .

Gebreyes, W A, Bahnson, PB, Funk, JA, Morrow, WEM. "ANTIMICROBIAL RESISTANCE OF THREE MAJOR FOODBORNE PATHOGENS AMONG PIGS REARED IN CONVENTIONAL AND ANTIMICROBIAL-FREE ENVIRONMENT IN THREE GEOGRAPHIC LOCATIONS IN THE UNITED STATES." International Pig Veterinary Society Congress. (January 2006). .

Robbins, RC and Gebreyes, WA. "DEVELOPMENT OF ASSAY DETECTING SALMONELLA TYPHIMURIUM FROM FECES USING QUANTITATIVE PCR." International Pig Veterinary Society Congress. (January 2006). .

Robbins, RC and Gebreyes, WA. "ANTIMICROBIAL ACTIVITY OF COPPER SULFATE, BORON, AND SANGUINARINE AGAINST MULTI-DRUG RESISTANT SALMONELLA ISOLATED FROM SWINE." International Pig Veterinary Society Congress. (January 2006). .

W.A. Gebreyes, K. B. Stevenson, P. Pancholi, M.Marcon. "Antimicrobial Resistance in Pseudomonas aeruginosa and Acinetobacter spp." 47th Interscience conference on Antimicrobial Agents and Chemotherapy (ICAAC). (January 2007). .

W. A. Gebreyes and P. M. Dorr.. "Truck wash practices and Salmonella dispersion in commercial swine production systems." Swine Diseases Conference. (January 2007). .

N. Tiao, A.Hoet, A. Hillier, W.A. Gebreyes. "SCC-mec typing of staphylococci isolated from veterinary teaching hospital." 47th Interscience conference on Antimicrobial Agents and Chemotherapy (ICAAC). (January 2007). .

Gebreyes WA, Patchanee P, White N, Line D and Shea D. "Identification of sources of Salmonella in watersheds and characterization of multiple antimicrobial resistant strains.." Nattional Water Conference. (January 2008). .

Gebreyes WA*, V. Srinivasan, G. Rajamohan, P. Pancholi, K. Stevenson, M. Marcon. "Novel Secondary Active Transporters Conferring Antimicrobial Resistance in Acinetobacter baumannii With Broad Substrate Specificity." 48th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC). (January 2008). .

Gebreyes WA*, N. Tiao, C. Bruno, L. Santos Filho. "Occurrence of methicillin resistant Staphylococcus aureus (MRSA) in Milk in Northeastern Brazil." 48th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC). (January 2008). .

Prapas Patchanee, Daniel Tadesse and Gebreyes WA. "Phenotypic and genotypic characterization of multi-drug resistant Salmonella serotype Heidelberg isolated from humans and animals." Int’l Association for Food Protection Congress. (January 2008). .

Pamela Fry, Melanie Abley, Neely Kaydos-Daniels, Paula Cray, Gebreyes WA. "Comparison of antimicrobial resistance determinants among Salmonella, Campylobacter, E. coli, and Enterococcus isolated from Swine." Int’l Association for Food Protection Congress. (January 2008). .

P. Fry, M. Abley, S. Kaydos-Daniels, P. Cray, J. Frye, Gebreyes WA. "Characterization of Antimicrobial Resistance Determinants among Salmonella, Campylobacter, Escherichia, and Enterococcus using PCR and Microarray Approaches." 48th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC). (January 2008). .

N. Tiao, L. Filho, C. Bruno and Gebreyes WA. "Phenotypic and Genotypic analysis of Staphylococcus spp. from raw bovine milk in Northeastern Brazil." Int’l Association for Food Protection Congress. (January 2008). .

Daniel A. Tadesse, Peter B. Bahnson, Julie A. Funk, W.E. Morgan Morrow and Gebreyes WA. "Molecular epidemiology and characterization of virulence gene in Y. enterocolitcia isolated from swine." Int’l Association for Food Protection Congress. (January 2008). .

Bayleyegn Zewde, W.E. Morgan Morrow, Rebecca Robbins, Gebreyes WA. "Comparison of swiffer® wipes and conventional drag swab methods in the recovery of Salmonella from swine production environment." Int’l Association for Food Protection Congress. (January 2008). .

W. A. Gebreyes, Prapas Patchanee., Nancy White., Daniel E. Line, Damian Shea. "Identification of Sources of Salmonella in Watersheds associated with Swine Production and Characterization of Multiple Antimicrobial Resistant Strains." Pig Veterinarian Society (IPVS) Congress. (January 2008). .

W. A. Gebreyes, D. A. Tadesse, M. Abley, P. Bahnson, J. Funk, M. Morrow.. "Molecular epidemiology and virulence genes characterization in Yersinia enterocolitcia of Porcine Origin." International Pig Veterinarian Society (IPVS) Congress. (January 2008). .

W. A. Gebreyes, Bayleyegn Molla Zewde, Melanie J. Abley, Brandon House, W.E. Morgan Morrow, Rebecca Robbins.. "Distribution of Salmonella in swine and swine production environment before and after disinfection of barns." Int’l Pig Veterinarian Society Congress (IPVS). (January 2008). .

P. Fry, M. Sullivan, M. Abley, S. Thakur, M. Marcon, W. Gebreyes.. "Hypervirulent Strains of Clostridium difficile of Porcine and Human Origin and Risk to Pork Safety." 8th International Symposium of the Epidemiology and Control of Foodborne pathogens in Pork.. (January 2009). .

Molla Z. B., M. J. Abley, V.P. Artuso, W. Farmer, C. Martin, J. Mathews, W. E. M. Morrow, A. Sterman, P. Rajala-Schultz, W. A. Gebreyes. "Biocide Use and Association with Antimicrobial Resistance of Salmonella Recovered in Swine Barn Floors." 96th Annual Meeting of the International Association of Food Protection. (January 2009). .

Gebreyes, W. A., Drobotij, M., Zewde, M. B. and Abley, M. "Prevalence of Methicillin-resistant Staphylococcus aureus (MRSA) in Pigs and Farm Workers." 96th Annual Meeting of the International Association of Food Protection. (January 2009). .

Drobotij, M., B.M. Zewde, M.J. Abley, C. Jackson and W.A. Gebreyes. "Prevalence of methicillin resistant staphylococci (MRS+) in pigs and farm workers.." 8th International Symposium on Epidemiology and Control of Foodborne Pathogens in Pork. (January 2009). .

Thakur, S, Zewde, M. B., Gebreyes, W.. "Phenotypic heterogeneity of Campylobacter coli isolated from conventional and antimicrobial free swine at farm and slaughter." 8th International Symposium on Epidemiology and Control of Foodborne Pathogens in Pork. (January 2009). .

Zewde M. B., M. J. Abley, V. P. Artuso, W. Farmer, C. Martin, W. E. M. Morrow, P. Rajala-Schultz, W. A. Gebreyes. "Association between biocide use and antimicrobial resistance of Salmonella in swine production environment." 8th International Symposium on Epidemiology and Control of Foodborne Patogens in Pork. (January 2009). .

J. Mathews, N. Tiao, P. Patchanee, J. Daniels, A. Hillier, C. Kohn and W.A. Gebreyes.. "Phenotypic and Genotypic Characterization of Staphylococci Isolates Collected from OSU Veterinary Teaching Hospital." 60th American College of Veterinary Pathologists Conference. (January 2009). .

Mathews, J., Tiao, N. Patchanee, P., and Gebreyes, W.A.. "Passive Surveillance and Genotyping of Methicillin Resistant Staphylococci at OSU Veterinary Medical Center." 2nd ASM Conference on Antimicrobial Resistance in Zoonotic Bacteria and Foodborne Pathogens in Animals, Humans and the Environment. (January 2010). .

W.A. Gebreyes, Molla, Z. B., M. Abley, S. Thakur, C. Jackson, P. Fedorka-Cray. "Methicillin resistant staphylococci (MRS+) in pigs and farm workers. 2nd ASM Conference on Antimicrobial Resistance in Zoonotic Bacteria and Foodborne Pathogens in Animals, Humans and the Environment." 2nd ASM Conference on Antimicrobial Resistance in Zoonotic Bacteria and Foodborne Pathogens in Animals, Humans and the Environment. (January 2010). .

W. A. Gebreyes, Molla, Z. B., M. J. Abley, V. Artuso-Ponte, W. Farmer, C. Martin, W. E. M. Morrow, P. Rajala-Schultz. "Antimicrobial resistance and association with biocide in Salmonella enterica in conventional swine production environment." 2nd ASM Conference on Antimicrobial Resistance in Zoonotic Bacteria and Foodborne Pathogens in Animals, Humans and the Environment. (January 2010). .

 

Degrees

1990 D.V.M., Addis Ababa University

2001 Ph.D., North Carolina State University

 

Editorial Activities

2002 - present Journal of Swine Health and Production
2002 - present Foodborne Pathogens and Diseases
2002 - present Epidemiology and infection
2002 - present Emerging Infectious Diseases (EID)
2002 - present Applied Environmental microbiology (AEM)
2002 - present Zoonosis and Veterinary Public Health
2008 - present Journal of Zoonosis and Public Health
2009 - present Foodborne pathogens and diseases journal (Mary Ann Liebert)
2010 - present Small Ruminants Research
 

Journal Articles

Gebreyes, W, A; Davies, P, R; Morrow, W, E; Funk, J, A; Altier, C. "Antimicrobial resistance of Salmonella isolates from swine.." Journal of clinical microbiology. Vol. 38, no. 12. (December 2000.): 4633-4636.

Funk, J, A; Davies, P, R; Gebreyes, W. "Risk factors associated with Salmonella enterica prevalence in three-site swine production systems in North Carolina, USA.." Berliner und Munchener tierarztliche Wochenschrift. Vol. 114, no. 9-10. (September 2001.): 335-338.

Gebreyes WA, Altier C. "Molecular characterization of multidrug-resistant Salmonella enterica subsp. enterica serovar Typhimurium isolates from swine." Journal of clinical microbiology. Vol. 40, no. 8. (August 2002.): 2813-2822.

Gebreyes, W. Abebe; Thakur, S.. "Molecular epidemiology of multidrug resistant Salmonella enterica serovar typhimurium isolated from swine and humans.." Infection Genetics and Evolution. Vol. 2, no. 4. (January 2003.): 277-.

Gebreyes WA. "Preharvest Food safety diagnostics for Salmonella serovars." Journal of Swine Health Production. Vol. 3, no. 11. (January 2003.): 141-145.

Funk, J.A. and Gebreyes WA. "Risk Factors associated with Salmonella prevelence on swine farms." Journal of Swine Health Production. Vol. 5, no. 12. (January 2004.): 246-251.

Gebreyes, Wondwossen, A; Davies, Peter, R; Turkson, Paa-Kobina; Morrow, W, E; Funk, Julie, A; Altier, Craig; Thakur, Siddhartha. "Characterization of antimicrobial-resistant phenotypes and genotypes among Salmonella enterica recovered from pigs on farms, from transport trucks, and from pigs after slaughter.." Journal of food protection. Vol. 67, no. 4. (April 2004.): 698-705.

Gebreyes, Wondwossen, A; Davies, Peter, R; Turkson, Paa-Kobina; Morrow, W, E; Funk, Julie, A; Altier, Craig. "Salmonella enterica serovars from pigs on farms and after slaughter and validity of using bacteriologic data to define herd Salmonella status.." Journal of food protection. Vol. 67, no. 4. (April 2004.): 691-697.

Gebreyes, Wondwossen, A; Thakur, Siddhartha; Davies, Peter, R; Funk, Julie, A; Altier, Craig. "Trends in antimicrobial resistance, phage types and integrons among Salmonella serotypes from pigs, 1997-2000.." The Journal of antimicrobial chemotherapy. Vol. 53, no. 6. (June 2004.): 997-1003.

Kong, Xiang, Q; Shea, Damian; Gebreyes, Wondwossen, A; Xia, Xin-Rui. "Novel hydrophobicity ruler approach for determining the octanol/water partition coefficients of very hydrophobic compounds via their polymer/solvent solution distribution coefficients.." Analytical chemistry. Vol. 77, no. 5. (March 2005.): 1275-1281.

Gebreyes, Wondwossen, A; Thakur, Siddhartha. "Multidrug-resistant Salmonella enterica serovar Muenchen from pigs and humans and potential interserovar transfer of antimicrobial resistance.." Antimicrobial agents and chemotherapy. Vol. 49, no. 2. (February 2005.): 503-511.

Gebreyes, Wondwossen, A; Thakur, Siddhartha; Morrow, W E Morgan. "Campylobacter coli: prevalence and antimicrobial resistance in antimicrobial-free (ABF) swine production systems.." The Journal of antimicrobial chemotherapy. Vol. 56, no. 4. (October 2005.): 765-768.

Thakur, Siddhartha; Gebreyes, Wondwossen A. "Prevalence and antimicrobial resistance of Campylobacter in antimicrobial-free and conventional pig production systems.." Journal of food protection. Vol. 68, no. 11. (November 2005.): 2402-2410.

Thakur, Siddhartha; Gebreyes, Wondwossen A. "Campylobacter coli in swine production: antimicrobial resistance mechanisms and molecular epidemiology.." Journal of clinical microbiology. Vol. 43, no. 11. (November 2005.): 5705-5714.

Gebreyes, Wondwossen, A; Thakur, Siddhartha; Morrow, W E Morgan. "Comparison of prevalence, antimicrobial resistance, and occurrence of multidrug-resistant Salmonella in antimicrobial-free and conventional pig production.." Journal of food protection. Vol. 69, no. 4. (April 2006.): 743-748.

Thakur, Siddhartha; Morrow, W E Morgan; Funk, Julie, A; Bahnson, Peter, B; Gebreyes, Wondwossen A. "Molecular epidemiologic investigation of Campylobacter coli in swine production systems, using multilocus sequence typing.." Applied and environmental microbiology. Vol. 72, no. 8. (August 2006.): 5666-5669.

Gebreyes, W, A; Altier, C; Thakur, S. "Molecular epidemiology and diversity of Salmonella serovar Typhimurium in pigs using phenotypic and genotypic approaches.." Epidemiology and infection. Vol. 134, no. 1. (February 2006.): 187-198.

Dorr, PM; Gebreyes, WA; Almond, G. "Porcine Reproductive and Respiratory Syndrome Virus: Age and management system disease modeling for pathogenic co-infection.." J. Swine Health Prod. Vol. 15, no. 5. (January 2007.): 258-263.

Dorr, Paul, M; Baker, Rodney, B; Almond, Glen, W; Wayne, Spencer, R; Gebreyes, Wondwossen A. "Epidemiologic assessment of porcine circovirus type 2 coinfection with other pathogens in swine.." Journal of the American Veterinary Medical Association. Vol. 230, no. 2. (January 2007.): 244-250.

Thakur, S; Tadesse, D; Morrow, WEM; Gebreyes, WA.. "Occurrence of Multi-drug resistant Salmonella in antimicrobial-free swine production systems.." Vet. Microbiol. Vol. 125, no. 3-4. (December 2007.): 362-367.

Siemon, Cedarose Ethel; Bahnson, Peter B.; Gebreyes, Wondwossen A.. "Comparative investigations of prevalence and antimicrobial resistance of Salmonella between pasture and conventionally reared poultry." Avian Diseases. Vol. 51, no. 1. (March 2007.): 112-117.

Miller, O; Fuller, F, J; Gebreyes, W, A; Lewbart, G, A; Shchelkunov, I, S; Shivappa, R, B; Joiner, C; Woolford, G; Stone, D, M; Dixon, P, F; Raley, M, E; Levine, J F. "Phylogenetic analysis of spring virema of carp virus reveals distinct subgroups with common origins for recent isolates in North America and the UK.." Diseases of aquatic organisms. Vol. 76, no. 3. (July 2007.): 193-204.

Gebreyes WA, Bahnson P., Funk JA, McKean J. and Patchanee P.. "Seroprevalence of Trichinella, Toxoplasma, and Salmonella in Antimicrobial-free and Conventional Swine Production Systems." Foodbourne Pathogens and Diseases. Vol. 5, no. 2. (April 2008.): 199-203.

Patchanee P., Molla Zewde B., Tadesse D. and Gebreyes WA. "Characterization of multi-drug resistant Salmonella enterica servovar Heidelberg isolated from humans and animals." Foodbourne Pathogens and Diseases. Vol. 5, no. 6. (December 2008.): 839-851.

Hoet AE, Caswell RJ, Degraves FL, Rajala-Schultz PJ, Gebreyes WA, Saville WJ, WIttum TE.. "A new approach to teaching veterinary public health at the Ohio State University.." J Vet Med Educ. Vol. 35, no. 2. (January 2008.): 160-165.

Heider LC, Meiring RW, Hoet AE, Gebreyes WA, Funk JA, Wittum TE. "Evaluation of vaccination with a commercial subunit vaccine on shedding of Salmonella enterica in subclinically infected dairy cows.." J Am Vet Med Assoc. Vol. 233, no. 3. (August 2008.): 466-469.

Rajala-Schultz PJ, Torres AH, Degraves FJ, Gebreyes WA, Patchanee P. "Antimicrobial resistance and genotypic characterization of coagulase-negative staphylococci over the dry period." Veterinary Microbiology. Vol. 134, no. 1-2. (February 2009.): 55-64.

Zewde BM, Robbins RC, Abley MJ, House B, Morrow WEM, Gebreyes WA. "Comparison of Swiffer R wipes and conventional drag swabs in the recovery of Salmonella in swine production systems." J. Food Protection. Vol. 72, no. 1. (January 2009.): 142-146.

Paul M. Dorr, Daniel A. Tadesse, Bayleyegn Molla Zewde, Siddhartha Thakur and Gebreyes WA. "Longitudinal Study on Salmonella dispersion and the role of enviromental contamination in commercial swine production systems." Applied Enviromental Microbiology. Vol. 75, no. 6. (March 2009.): 1478-1486.

Heider LC, Hoet AE, Wittum TE, Khaitsa ML, Love BC, Huston CL, Morley PS, Funk JA, Gebreyes WA. "Genetic and Phenotypic Characterication of the bla(CMY) Gene from Escherichia coli and Salmonella enterica Isolated from Food-Producing Animals, Humans, the Enviroment, and Retail Meat." Foodbourne Pathog Dis.. Vol. 6, no. 10. (December 2009.): 1235-1240.

Mengesha D, Molla Zewde D., Toquin MT, Kleer J, Hildebrandt G, Gebreyes WA. "Occurrence and Distribution of Listeria monocytogenes and Other Listerua Species in Ready-to-Eat and Raw Meat Products." Berl Munch Tierarztl Wochenschr. Vol. 122, no. 1-2. (January 2009.): 20-24.

Heider LC, Funk JA, Hoet AE, Meiring RW, Gebreyes WA, Wittum TE. "Identification of Escherichia coli and Salmonella eterica organisms with reduced susceptibility to ceftriaxone from fecal samples of cows in dairy herds." Am J Vet Res.. Vol. 70, no. 3. (March 2009.): 389-393.

Gebreyes WA, Siddhartha Thakur, Paul Dorr, Daniel A. Tadesse, Karen Post and Leslie Wolf. "Occurence of virulence gene spvA and role on the clinical significance of multi-drug resistant Salmonella." J Clin Microbiol. Vol. 47, no. 3. (March 2009.): 777-780.

Schissler J., Hillier A., Daniels J., Cole L. and Gebreyes WA. "Evaluation of Clinical Laboratory Standards Institute interpretive criteria for methicillin-resistant Staphylococcus pseudintermedius isolated from dogs." J Vet Diagnostic Investigation. Vol. 21, no. 5. (September 2009.): 684-688.

Vijaya Bharathi Srinivasan, Govindan Rajamohan, and Gebreyes WA. "Role of AbeS, a novel efflux pump of the SMR family of transporters, in resistance to antimicrobial agents in Acinetobacter baumannii." Antimicrobial Agents and Chemotherapy. Vol. 53, no. 12. (December 2009.): 5312-5316.

Paul M. Dorr and Gebreyes WA. "Flavophospholipol: Effect on multi-drug resistant Salmonella enterica serovar Typhimurium in swine." J Swine Health and Production. Vol. 17, no. 6. (January 2009.): 308-317.

Vijaya Bharathi Srinivasan, Govindan Rajamohan, Preeti Pancholi, Kurt Stevenson, Daniel A. Tadesse, Prapas Patchanee, Mario Marcon, Gebreyes WA. "Genetic relatedness and molecular charaterization of resistance determinants in multi-drug resistant Acinetobacter baumannii isolated in Central Ohio, USA." Annals of Clinical Microbiology and Antimicrobials. Vol. 8, no. 21. (June 2009.): -.

Govindan Rajamohan, Vijaya Srinivasan and Gebreyes WA. "Biocide-tolerant multi-drug resistant Acinetobacter baumannii clinical strains are associated with higher biofilm formation." J Hosp Infect. Vol. 73, no. 3. (November 2009.): 287-289.

Thakur, Siddhartha; White, David; McDermott, Patrick; Zhao, Shaohua; Harbottle, Heather; Gebreyes, WA; Abbott, Jason; English, Linda; Carter, Peggy; Kroft, Brenda; Lafon, Patti. "Genotyping of Campylobacter coli isolated from Humans and Retail Meats Using Multi Locus Sequence Typing and Pulsed Field Gel Electrophoresis." J Applied Microbiol. Vol. 106, no. 5. (May 2009.): 1722-1733.

Paul M. Dorr, Megan Nemechek, Alan B. Scheidt, Ronald E. Baynes, Gebreyes WA, Glen W. Almond. "Water-flow variation and pharmacoepidemiology of tetracycline hydrochloride administration via drinking water in swine finishing farms." JAVMA. Vol. 235, no. 3. (August 2009.): 299-304.

Alali WQ, Scott HM, Norby B, Gebreyes W, Loneragan GH. "Quantification of the Bla(CMY-2) in Feces from Beef Feedlot Cattle Administered Three Different Doses of Ceftiofur in a Longitudinal Controlled Field Trial." Foodbourne Pathogens Dis.. Vol. 6, no. 8. (October 2009.): 917-924.

Pandya M, Wittum T, Tadesse DA, Gebreyes W, Hoet A. "Environmental Salmonella Surveillance in The Ohio State University Veterinary Teaching Hospital." Vector Bourne Zoonotiv Dis.. Vol. 9, no. 6. (December 2009.): 649-654.

Rajamohan G, Srinivasan VB, Gebreyes WA. "Novel role of Acinetobacter baumannii RND efflux transporters in mediating decreased susceptibility to biocides." J Antimicrob Chemother. Vol. 65, no. 2. (February 2010.): 228-232.

Drozd M, Kassem H, Gebreyes W, Rajashekara G. "A quantitative polymerase chain reaction assay for detection and quantification of Lawsonia intracellularis." J Vet Diagn Invest. Vol. 22, no. 2. (March 2010.): 265-269.

Thakur S, Putnam M, Fry PR, Abley M, Gebreyes WA. "Prevalence of antimicrobial resistance and association with toxin genes in Clostridium difficile in commercial swine." Am J Vet Res. Vol. 71, no. 10. (October 2010.): 1189-1194.

Sibhat B, Molla Zewde B, Zerihun A, Muckle A, Cole L, Boerlin P, Wilkie E, Perets A, Mistry K, Gebreyes WA. "Salmonella Serovars and Antimicrobial Resistance Profiles in Beef Cattle, Slaughterhouse Personnel and Slaughterhouse Enviroment in Ethiopia." Zoonoses Public Health. (January 2010.): -.

Thakur S, Zhao S, McDermott PF, Harbottle H, Abbott J, English L, Gebreyes WA, White DG. "Antimicrobial Resistance, Virulence, and Genotypic Profile Comparison of Campylobacter jejuni and Campylobacter coli Isolated from Humans and Retail Meats." Foodborne Pathog Dis. Vol. 7, no. 7. (July 2010.): 835-844.

Tadesse DA., Bahnson PB., Funk JA., Thakur S., Morrow WEM., Wittum T., DeGraves F., Rajala-Schultz PJ and Gebreyes WA. "Prevalence and Antimicrobial Resistance Profile of Campylobacter spp. Isolated from Conventional and Antimicrobial Free Production Systems from Different U.S. Regions." Foodborne Pathog Dis. (January 2010.): -.

Srinivasan V., Rajamohan G., Pancholi P., Stevenson K., Marcon M. and Gebreyes WA. "Molecular cloning and functional characterization of two novel membrane fusion proteins in conferring antimicrobial resistance in Acinetobacter baumannii." J. Antimicrobial Chemotherapy. (January 2010.): -.

Sopirala MM, Mangino JE, Gebreyes WA, Biller B, Bannerman T, Balada-Llasat JM, Pancholi P. "Synergy Testing by Etest(R), Microdilution Checkerboard, and Time-kill Methods for Pan Drug Resistant Acinetobacter baumannii." Antimicrob Agents Chemother. (January 2010.): -.

Alali WQ, Thakur S., Berghaus R., Martin MP and Gebreyes WA. "Prevalence and Distribution of Salmonella in Organic and Conventional Broiler Poultry Farms." Foodborne Pathog Dis. (January 2010.): -.

Rajamohan G., Srinivasan V., and Gebreyes, WA. "Molecular and functional characterization of a novel efflux pump, AmvA, in mediating antimicrobial and disinfectant resistance in Acinetobacter baumannii." J. Antimicrobial Chemotherapy. Vol. 65, no. 9. (September 2010.): 1919-1925.

Patchanee P, Molla B, Line D, White N and Gebreyes WA. "Tracking Salmonella and various watersheds using phenotypic and genotypic approaches." Foodborne Pathog Dis. Vol. 7, no. 9. (September 2010.): 1113-1120.

Wittum TE, Mollenkopf DF, Daniels JB, Parkinson AE, Mathews JL, Fry PR, Abley MJ, and Gebreyes WA. "CTX-M-Type Extended-Spectrum b-Lactamases Present in Escherichia coli from the Feces of Cattle in Ohio, United States." FOODBORNE PATHOGENS AND DISEASE. (January 2010.): -.

Mollenkopf, DM; KE Kleinhenz; JA Funk; WA Gebreyes; TE Wittum. "Salmonella enterica and Escherichia coli harboring blaCMY-2 in retail beef and pork products." Foodborne Pathogens and Disease. (January 2010.): -.

Molla B, Sterman A, Mathews J, Artuso-Ponte V, Abley M, Farmer W, Rajala-Schultz P, Morrow WE, Gebreyes WA. "Salmonella enterica in commercial swine feed and subsequent isolation of phenotypically and genotypically related strains in fecal samples." Appl Environ Microbiol. (January 2010.): -.

 

Reference Works

January 1999 Turner M, Funk J, Nichols M, Gebreyes W, Altier C, and Davies P."Salmonella prevalence, serotypes and patterns of antimicrobial resistance in cohorts of nursery and finishing pigs" St. Louis.
January 2000 Gebreyes WA, Funk J, Davies P, and Altier C."Antimicrobial Resistance of Salmonella Isolated from Swine" Raleigh.
January 2000 Gebreyes WA, Davies PR, Funk JA, and Altier C."Molecular Characterization of Multi-drug Resistant Salmonellae in Swine" Atlanta.
January 2000 Davies PR, Gebreyes WA, Turkson PK, Morrow WEM, Funk JA, and Altier C."Is culture of samples collected at slaughter a valid approach for assessing the Salmonella status of swine farms" .
January 2001 Gebreyes WA, Davies PR, Funk JA, and Altier C."Antimicrobial Resistance and Diversity of Salmonella serovars isolated from Swine" St. Louis.
January 2001 Gebreyes WA and Altier C."Evaluation of Multiplex PCR method in detection of multi-drug resistant Salmonella in Swine" St. Louis.
January 2002 Gebreyes, WA and Thakur, S."Comparison of Multi-drug resistant Salmonella enterica serovar Typhimurium strains isolated from swine and humans: characterization of common but non-pathogenic multi-drug resistant Salmonella from swine" Hilton Head.
January 2002 Gebreyes, WA and Thakur, S."Comparison of Multi-drug resistant Salmonella enterica serovar Typhimurium strains isolated from swine and humans: characterization of common but non-pathogenic multi-drug resistant Salmonella from swine" San Diego.
January 2002 Gebreyes WA and Wolf L."Phenotypic and Genotypic Comparison of Salmonella strains collected from humans and swine in North Carolina" Atlanta.
January 2002 Abebe Gebreyes, W. and S. Thakur."Molecular Epidemiology of Multi-drug resistant Salmonella enterica serovar Typhimurium Isolated from Swine and Humans" .
January 2003 S. Thakur and W.A. Gebreyes."Molecular Characterization of Integrons and Antimicrobial Resistance Genes in Salmonella enterica serovar Muenchen from Swine and Humans" Chicago.
January 2003 Gebreyes, W.A., Thakur, S., Altier, C. and Wolf, L."Three Years Trend in Antimicrobial Resistance and Genotypes among Predominant Salmonella Serovars in Swine and Humans in North Carolina" Bethesda.
January 2003 Gebreyes, W.A., Thakur S., Bahnson, P., Funk J., Morrow M."Antimicrobial Resistance and Diversity of Campylobacter in Antimicrobial Free and Conventionally Reared Market Swine" Chicago.
January 2003 J.A. Funk, P.B. Bahnson, W.A. Gebreyes, W.E.M. Morrow."Yersinia enterocolitica Prevalence in Antibiotic Free and Conventionally Reared Swine." Chicago.
January 2004 Gebreyes, W.A. and Thakur S."An Emerging Multi-drug Resistant Salmonella Serovar Muenchen Strain" Atlanta.
January 2004 Gebreyes, W.A. and Thakur S."Multi-Drug Resistant (MDR) Salmonella Serovar Muenchen from Pigs and Humans Phenotypically and Genotypically Similar to Other MDR Serovars" Washington DC.
January 2004 S. Thakur and W.A. Gebreyes."Comparison of Antimicrobial Resistance Profile and Diversity of Campylobacter Species Isolated from Pigs Raised in Antimicrobial Free Farms and Conventional Farms in North Carolina" Atlanta.
January 2006 D. Coombs, Gebreyes, W.A., Thakur S."Trend in Antimicrobial Resistance of Salmonella from Swine and Humans in North Carolina" Chicago.
January 2006 W.A. Gebreyes, P. Bahnson, J. Funk, J. Mckean."Serological Analysis of Toxoplasma gondii, and Trichinella spiralis among niche market antimicrobial-free and conventionally reared pigs" Chicago.
January 2006 R.C. Robbins, W.A. Gebreyes, W.E.M. Morrow, J.W. Spears."Effect of sanguinarine on growth performance and Salmonella shedding in nursery pigs" Chicago.
January 2007 W.A. Gebreyes, K. B. Stevenson, P. Pancholi, M.Marcon."Antimicrobial Resistance in Pseudomonas aeruginosa and Acinetobacter spp" Chicago.
January 2007 D.A. Tadesse, P. Bahnson, J. Funk, W.E. M Morrow, S. Thakur and W.A. Gebreyes."Prevalence and Antimicrobial Susceptibility of Campylobacter in Various Geographic Location and Swine Production Systems" Columbus.
January 2007 Pelger A, S. Bateman, A. Hillier, A. Hoet, W.A. Gebreyes."Monitoring predominant bacterial pathogens in OSU, Veterinary Teaching Hospital and occurrence of antimicrobial resistance" Columbus.
January 2007 N. Tiao, A.Hoet, A. Hillier, W.A. Gebreyes."SCC-mec typing of staphylococci isolated from veterinary teaching hospital" Chicago.
January 2007 Fry P, N. Kaydos-Daniels, P. F. Cray, W.A. Gebreyes."Antimicrobial Resistance of Salmonella, Campylobacter, E.coli, and Enterococcus isolated from Swine" Columbus.
January 2008 Pamela Fry, Melanie Abley, Neely Kaydos-Daniels, Paula Cray, Gebreyes WA."Comparison of antimicrobial resistance determinants among Salmonella, Campylobacter, E. coli, and Enterococcus isolated from Swine" Columbus.
January 2008 P. Fry, M. Abley, S. Kaydos-Daniels, P. Cray, J. Frye, Gebreyes WA."Characterization of Antimicrobial Resistance Determinants among Salmonella, Campylobacter, Escherichia, and Enterococcus using PCR and Microarray Approaches" Washington, D.C.
January 2008 N. Tiao, L. Filho, C. Bruno and Gebreyes WA."Phenotypic and Genotypic analysis of Staphylococcus spp. from raw bovine milk in Northeastern Brazil" Columbus.
January 2008 Daniel A. Tadesse, Peter B. Bahnson, Julie A. Funk, W.E. Morgan Morrow and Gebreyes WA."Molecular epidemiology and characterization of virulence gene in Y. enterocolitcia isolated from swine" Columbus.
January 2008 Prapas Patchanee, Daniel Tadesse and Gebreyes WA."Phenotypic and genotypic characterization of multi-drug resistant Salmonella serotype Heidelberg isolated from humans and animals" Columbus.
January 2008 Gibson, B., Zewde, M.B., M. J. Abley, N. Tiao, W. Gebreyes."The Prevalence of mecA gene in swine fecal samples" Columbus.
January 2008 Gebreyes WA, V. Srinivasan, G. Rajamohan, P. Pancholi, K. Stevenson, M. Marcon."Novel Secondary Active Transporters Conferring Antimicrobial Resistance in Acinetobacter baumannii With Broad Substrate Specificity" Washington, D.C.
January 2008 Gebreyes WA, Patchanee P, White N, Line D and Shea D."Identification of sources of Salmonella in watersheds and characterization of multiple antimicrobial resistant strains" Sparks.
January 2008 Gebreyes WA*, N. Tiao, C. Bruno, L. Santos Filho."Occurrence of methicillin resistant Staphylococcus aureus (MRSA) in Milk in Northeastern Brazil" Washington, D.C.
January 2008 Bayleyegn Zewde, W.E. Morgan Morrow, Rebecca Robbins, Gebreyes WA."Comparison of Swiffer® wipes and conventional drag swab methods in the recovery of Salmonella from swine production environment" Columbus.
January 2009 Mathews, J., Tiao, N. Patchanee, P., and Gebreyes, W.A."Phenotypic and Genotypic Characterization of Clinical Staphylococci Isolates Collected by Passive Surveillance from OSU-VTH" Columbus.
January 2009 Gebreyes, W. A., Drobotij, M., Zewde, M. B. and Abley, M."Prevalence of Methicillin-resistant Staphylococcus aureus (MRSA) in Pigs and Farm Workers" Grapevine.
January 2009 Zewde, M. B., Abley, M., Farmer, W., Morrow, M.E.W and Gebreyes, W.A."Biocide Use and Association with Antimicrobial Resistance of Salmonella Recovered in Swine Barn Floors" Grapevine.
January 2009 Zewde M. B., M. J. Abley, W. Farmer, W. E. M. Morrow, Paivi Rajala-Schultz, W. A. Gebreyes."Disinfectant use and association with antimicrobial resistance of Salmonella recovered in swine barn floors." Columbus.
January 2009 P. Fry, M. Sullivan, M. Abley, S. Thakur, M. Marcon, W. Gebreyes."Characterization of Hypervirulent Strains of Clostridium difficile of Porcine and Human Origin" Columbus.
January 2009 P. Fry, M. Sullivan, M. Abley, S. Thakur, M. Marcon, W. Gebreyes."Hypervirulent Strains of Clostridium difficile of Porcine and Human Origin and Risk to Pork Safety" Quebec City.
January 2009 J. Mathews, N. Tiao, P. Patchanee, J. Daniels, A. Hillier, C. Kohn and W.A. Gebreyes."Phenotypic and Genotypic Characterization of Staphylococci Isolates Collected from OSU Veterinary Teaching Hospital" Monterey.
January 2009 Drobotij, M., Zewde, M. B., Abley, J. M., Jackson, R. C., Gebreyes, W.A."Prevalence of Methicillin Resistant Staphylococcus aureus (MRSA) in Pigs and Farm Workers" Columbus.
January 2010 W.A. Gebreyes, Molla, Z. B., M. Abley, S. Thakur, C. Jackson, P. Fedorka-Cray."Methicillin resistant staphylococci (MRS+) in pigs and farm workers. 2nd ASM Conference on Antimicrobial Resistance in Zoonotic Bacteria and Foodborne Pathogens in Animals, Humans and the Environment" Toronto.
January 2010 W. A. Gebreyes, Molla, Z. B., M. J. Abley, V. Artuso-Ponte, W. Farmer, C. Martin, W. E. M. Morrow, P. Rajala-Schultz,."Antimicrobial resistance and association with biocide in Salmonella enterica in conventional swine production environment" Toronto.
January 2010 Mathews, J., Tiao, N. Patchanee, P., and Gebreyes, W.A."Passive Surveillance and Genotyping of Methicillin Resistant Staphylococci at OSU Veterinary Medical Center" Columbus.
January 2010 Mathews, J., Tiao, N. Patchanee, P., and Gebreyes, W.A."Passive Surveillance and Genotyping of Methicillin Resistant Staphylococci at OSU Veterinary Medical Center" Toronto.
January 2010 Molla Z. B., M. J. Abley, V.P. Artuso, W. Farmer, C. Martin, J. Mathews, W. E. M. Morrow, A. Sterman, P. Rajala-Schultz, W. A. Gebreyes."Phenotypic Characterization and genetic relatedness among Salmonella enterica isolates recovered from commercially produced swine feed and swine on farms" Columbus.

Presentations

"Antimicrobial Use, Resistance, and Molecular Characterization of Salmonella isolated from swine." Presented at Department of Veterinary Anatomy and Public Health, Texas A&M University, College Station, TX. (April 2001)

"Molecular Epidemiology of Salmonellae in swine." Presented at Department of Preventive Veterinary Medicine, Ohio State University, Columbus, OH. (February 2001)

"Epidemiology of Salmonellae in swine: from farm to the genome." Presented at Food Animal Health Research Program, Ohio State University, Wooster, OH. (February 2001)

"Molecular Epidemiology of Salmonellae in swine." Presented at Department of Veterinary Medicine, University of Maryland, College Park, MD. (March 2001)

"Public Health Aspects of Foodborne Diseases Related to Swine." Presented at Pork Quality and Safety Summit, Des Moines, IA. (June 2002)

"Antimicrobial Resistance and Molecular Epidemiology of Salmonella in Swine and Humans." Presented at Department of Microbiology, College of Agriculture and Life Sciences, NC State University, Raleigh, NC. (September 2002)

"Salmonella and Antimicrobial Resistance: From Farm to the Genome." Presented at Department of Food Science, College of Agriculture and Life Sciences, NC State University, Raleigh, NC. (October 2002)

"Diversity of Foodborne Pathogens: Phenotypic and Genotypic Approaches." Presented at Ethiopian Health and Nutrition Research Institute, Addis Ababa, ET|ETH. (September 2003)

"Diversity of Foodborne Pathogens: Phenotypic and Genotypic Approaches." Presented at Addis Ababa University, Faculty of Veterinary Medicine, Debre Zeit, ET|ETH. (September 2003)

"Antimicrobial Resistance of Foodborne Pathogens and Genotypic Approaches." Presented at National Animal Health Research Center, Sebeta. (September 2003)

"Core Fingerprinting Technologies for Subtyping Foodborne Pathogens." Presented at FUTURES Biotechnology and Biodiversity Seminar Series, Greensboro, NC. (April 2003)

"Diversity of Foodborne Pathogens: Phenotypic and Genotypic Approaches." Presented at Livestock Insect Research Workers' Conference, Atlantic Beach, NC. (June 2003)

"Updates on current activities on food safety in the US pork industry." Presented at North Carolina Swine Veterinarians bimonthly Meeting, Kenansville, NC. (May 2003)

"Source, Diversity and Resistance of Foodborne Pathogens in Swine and Pork." Presented at Salmonella Working Group Meeting, Des Moines, IA. (May 2003)

"Update on international initiative on harmonization of sampling methods and culturing techniques for Salmonella." Presented at National Pork Board, Des Moines, IA. (December 2003)

"Review of the 12th International Symposium on Campylobacter, Helicobacter and Related Organisms." Presented at National Pork Board, Des Moines, IA. (December 2003)

"Workshop on Microbial Isolation/ Identification and Characterization." Presented at National Animal Health Research Center (NAHRC), Sebeta, ET|ETH. (July 2004)

"Prevalence and Antibiotic Resistance of Campylobacter among Antimicrobial free and conventional Swine Herds." Presented at Pork Quality and Safety Summit, Des Moines, IA. (August 2004)

"Antimicrobial resistance among swine Salmonella and Campylobacter and Molecular Epidemiology of Multi-drug Resistance." Presented at University of Bristol, School of Veterinary Medicine, GB|GBR. (June 2004)

"Molecular epidemiology and characterization of Campylobacter and Salmonella in swine and humans." Presented at FDA, Center for Veterinary Medicine, Laurel, MD. (April 2005)

"Campylobacter and food safety issues at postharvest levels." Presented at Postharvest Needs Assessment Conference, Cincinnati, OH. (July 2005)

"Characterization of Foodborne Pathogens: Phenotypic and Genotypic Approaches." Presented at University of Cape Town, Department of Medical Microbiology, Cape Town. (March 2005)

"Antimicrobial use and antimicrobial resistance issues in Swine production systems." Presented at Food and Drug Administration, Center for Veterinary Medicine, Rockville, MD. (March 2005)

"Salmonella Serotypes that Cause Illness in Humans and Characterization." Presented at Special Presentation to USDA-FSIS technical and professional staff, Washington, DC, US|USA. (January 2006)

"Antimicrobial Resistance in Foodborne Pathogens." Presented at American Association of Swine Veterinarians (AASV) Annual Conference, Kansas City, MO, US|USA. (January 2006)

"Antimicrobial use and resistance in foodborne pathogens.." Presented at American Association for Veterinary Laboratory Diagnosticians (AAVLD), Minneapolis, MN, US|USA. (January 2006)

"Truck wash practices and Salmonella dispersion in commercial swine production systems." Presented at Iowa State University, Ames, IA. (November 2007)

"Food Safety and optimum production of food animals without the use of antimicrobials." Presented at Phytobiotics GMBH, Munich, DE|DEU. (October 2007)

"Comparative epidemiology, toxino- and genotyping of Clostridium difficile isolated from swine and humans.." Presented at Joint NPB/CDC and USDA symposium on C. difficile, Chicago, IL, US|USA. (January 2007)

"Passive surveillance of MRSA and other predominant pathogens in OSU-VTH." Presented at OSU-CVM Alumni reunion weekend continuing education conference, Columbus, OH. (September 2008)

"Clostridium difficile: An emerging Zoonosis?." Presented at One Medicine Conference, Columbus, OH. (September 2008)

"Prevalence and characterization of Methicillin Resistant Staphylococcus aureus (MRSA) in pigs and farm workers." Presented at National Pork Board, Des Moines, IA. (October 2008)

"Research and training capacity building: veterinary public health in East Africa.." Presented at Center for African Studies at OSU, . (January 2008)

"Molecular Epidemiology and Characterization of foodborne and nosocomial pathogens.." Presented at Molecular Medicine and Genomics in Africa, Khartoum, SD|SDN. (January 2008)

"Antimicrobial use in food animals and association with antimicrobial resistance." Presented at Ohio Department of Agriculture, . (January 2008)

"Prevalence and antimicrobial resistance in antimicrobial-free and conventional production systems." Presented at Ohio Environmental Council, Columbus, OH. (June 2008)

"Biocide use in swine production systems and association with multi-drug resistant Salmonella." Presented at USDA, Washington, D.C.. (November 2008)

"Preliminary investigation of Methicillin resistant staphylococci in Paraiba, Brazil: a collaborative effort between OSU and UFPB.." Presented at National Semi Arid Institute Food Safety Workshop, Campina Grande, BR|BRA. (January 2009)

"Molecular Epidemiology of Antimicrobial Resistance among Key Foodborne Pathogens.." Presented at Asia-Pacific Foodborne and Zoonoses Symposium, . (January 2009)

"Antimicrobial resistance in swine enteric pathogens and control strategies." Presented at Symposium on control of enteric pathogens, Bakum, DE|DEU. (June 2009)

"The Role of antimicrobial alternatives in Production immunologic and Gut Physiologic Parameters in Swine." Presented at Phytobiotics GMBH symposium, Rennes, FR|FRA. (June 2009)

"Epidemiology of hypervirulent Clostridium difficile in pigs and humans.." Presented at Midwest Veterinary Conference, . (February 2009)

"Molecular Epidemiology of Antimicrobial resistance and Food Safety.." Presented at International Turkey Diseases Symposium, Berlin, DE|DEU. (January 2010)

"Milk Quality in Goats: Technologic Advances and Capacity Needs." Presented at 10th International Goat Association Conference, Recife, BR|BRA. (January 2010)

"Control and prevention of enteric pathogens using alternatives to antimicrobials.." Presented at Phytobiotics Symposium, Nuremberg, DE|DEU. (January 2010)

 

Professional Activities

2006 - present Pre-harvest Pork Safety committee. National Pork Board.
2006 - present Pharmaceutical Issues Task Force (PITF) member. National Pork Board.
2006 - present Council on Research (member). College of Veterinary Medicine, The Ohio State University.
2006 - present College Infectious Diseases Committee (CIDC). The Ohio State University.
2007 - present Manuscript Reviewer. Canadian Journal of Veterinary Research.
2008 - present MRSA Taskforce member. National Pork Board.
2008 - present Manuscript Reviewer. Veterinary Microbiology.
2008 - present Manuscript Reviewer. Journal of Wildlife Diseases.
2002 - 2004 Training on Multi-hazard, wet-lab. Training on emergency veterinary management. U.S. Veterinary Medical Assistance Team (VMAT).
2003 - 2004 Served as instructor in the annual Food Safety and Security courses. Specific focus include emerging technologies in diagnostics and modern swine production systems and food safety. U.S. Army Veterinary Corps. San Antonio, TX.
2004 Ad-hoc grant reviewer in two sections: Ensuring Food Safety (32.0) and Epidemiological Approaches for Food Safety (32.1). United States Department of Agriculture (USDA), CSREES, National Research Initiative (NRI).
2004 Search committee member to recruit swine health and production faculty member. NCSU, College of Veterinary Medicine. Raleigh, NC.
2004 External board examiner for Postgraduate Programs: Masters of Veterinary Epidemiology and Masters of Veterinary Medicine. Examined 24 postgraduates, served as main examiner for four of the candidates.. Addis Ababa University, Faculty of Veterinary Medicine.
2004 Disease, Disability, and Injury Prevention and control special emphasis panel (SEP). Served as lead reviewer in two panels: Sampling techniques for Norovirus and U.S. Burden of Illness sections. Center for Disease Control and Prevention (CDC). Atlanta, GA.
2004 - 2005 Research committee member. NCSU, College of Veterinary Medicine. Raleigh, NC.
2005 Bio-Terrorism Training and Curriculum Development Program. Department of Health and Human Services (DHHS), HRSA.
2005 National Research Initiative (NRI). Food Safety (32.0B) Postharvest panel. United States Department of Agriculture (USDA), CSREES.
2005 Medical Research Council (MRC).
2001 - 2006 Salmonella working Group committee member. National Pork Board.
2002 - 2006 Credentials Committee. Committee Chair for 2005-2006 cycle. American College of Veterinary Preventive Medicine.
2003 - 2006 Antimicrobial Use, Resistance and Impact to the Pork Industry. National Pork Board.
2003 - 2006 Swine Information Database. Pork safety committee. United States Department of Agriculture.
2003 - 2006 Southeastern Regional Center for Excellence in Biodefense and Emerging Infections (SERCEB). Affiliate member. Served as a representative for the College of Veterinary Medicine (CVM).. NCSU, College of Veterinary Medicine. Raleigh, NC.
2003 - 2006 Member of University standing Committee on International Programs (CIP). North Carolina State University. Raleigh, NC.
2004 - 2006 Leader, Population Medicine concentration area in the Comparative Biomedical Sciences (CBS) graduate program. NCSU, College of Veterinary Medicine. Raleigh, NC.
2006 Grant review panel member. Medical Research Council, Republic of South Africa..
2006 External examiner for a Ph.D. program. University of South Australia.
2006 Animal production and protection, Small Business Innovative Research (SBIR). United States Department of Agriculture (USDA), CSREES.
2007 Review panelist. National Institute of Health (NIH), National Institute of Allergy and Infectious Diseases (NIAID), International Research on Infectious Diseases (IRID).
2007 Organizing committee member for conference on microbial ecology of antimicrobial resistance. EU-US Safe Food consortium.
2007 Mucosal Immunology search committee member (PHPID). The Ohio State University.
2008 Chair, Search committee for Veterinary Epidemiologist position. The Ohio State University.
2008 International Congress committee, Public Health Preparedness in Infectious Diseases. The Ohio State University.
2008 Human Health and Safety committee member. American Association of Swine Veterinarians (AASV).
2008 Epidemiological Approaches for Food Safety. U.S. Department of Agriculture.
2008 The Kingdom of Saudi Arabia National Science, Technology and Innovation Plan. American Association for Advancement of Science (AAAS).
2008 Search committee member for Director of Clinical Infectious Diseases. OSU-VTH.
2008 Participated in a three day workshop to advise the University Administration on expansion of PhD. Programs. Addis Ababa University.
2008 - 2009 International Pork Safety Meeting (SAFEPORK). SAFEPORK, Quebec.
2009 Technology Assessment consultant in areas of New detection technologies, molecular epidemiology and source tracking in the food industry and food safety as it relates to livestock. Department of Homeland Security.
2009 Keynote speaker, Workshop on Food safety and molecular epidemiology in semi-arid region of Brazil. National Semi-Arid Institute (INSA).
2009 Keynote Speaker. Veterinary Public Health Centre for Asia-Pacific.
2009 Environmental reservoir of emerging foodborne pathogens (Session S10). International Association for Food Protection (IAFP) conference. International Association for Food Protection (IAFP). Grapevine, TX.