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Publications

Peer Reviewed Articles

(partial listing)

  1. Adams RJ, DA Mathys, DF Mollenkopf, A Whittle, JB Daniels, TE Wittum. Carbapenemase-Producing Aeromonas veronii Disseminated in the Environment of an Equine Specialty Hospital. Vectorborne Zoonotic Dis 2017;17:439-442.
  2. Mathys, DA, DF Mollenkopf, J Nolting, A Bowman, JB Daniels, TE Wittum. Extended-Spectrum Cephalosporin-Resistant Enterobacteriaceae in enteric flora of wild ducks. Journal of Wildlife Diseases 2017;doi:10.7589.
  3. Mathys, DA, DF Mollenkopf, CA Bremer, JB Daniels, TE Wittum. Prevalence of AmpC- and ESBL- (Extended Spectrum β-lactamase) harboring Enterobacteriaceae in fecal flora of a healthy domestic canine population. Zoonoses and Public Health 2017; doi:10.1111/zph.12341.
  4. Mathys, DA, BA Mathys, DF Mollenkopf, JB Daniels, TE Wittum. Enterobacteriaceae Harboring AmpC (blaCMY) and ESBL (blaCTX-M) in Migratory and Nonmigratory Wild Songbird Populations on Ohio Dairies. Vector borne Zoonotic Disease, 2017;doi: 10.1089/vbz.2016.2038.
  5. Mollenkopf DF, JW Stull, DA Mathys, AS Bowman, SM Feicht, JB Daniels, TE Wittum. Carbapenemase-producing Enterobacteriaceae recovered from the environment of a swine farrow-to-finish operation in the United States. Antimicrob Agents Chemother 2017; e01298.
  6. Landers, TF, DF Mollenkopf, RL Faubel, A Dent, P Pancholi, JB Daniels, TE Wittum. Extended Spectrum β-lactam Resistance in the Enteric Flora of Patients at a Tertiary Care Medical Center. Zoonoses and Public Health 2016; doi: 10.1111/zph.12293.
  7. Mollenkopf DF, RL Faubel, P Pancholi, TF Landers, MM Erdman, JB Daniels, TE Wittum. Surveillance and characterization of carbapenemase-producing Klebsiella pneumoniae recovered from patient stool samples at a tertiary care medical center. Antimicrob Agents Chemother 2015;59:5857–5859.
  8. Mollenkopf DF, J Cenera, E Bryant, C King, I Kashoma, A Kumar, JA Funk, G Rajashekara, TE Wittum. Organic or antibiotic-free labeling does not impact the recovery of enteric pathogens and antimicrobial-resistant Escherichia coli from fresh retail chicken. Foodborne Pathogens and Disease 2014;11:920-929.
  9. Gebreyes, WG, J Dupouy-Camet, MJ Newport, CJB Oliveira, LS Schlesinger, YM Saif, S Kariuki, LJ Saif, WJA Saville, TE Wittum, AE Hoet, LJ King, R Kazwala, T Shryock, M Bisesi, P Patchanee, S Boonmar. The Global One Health Paradigm: Challenges and 1 Opportunities for Tackling Infectious Diseases at the Human, Animal and Environment Interface in Low-resource Settings. Plos Neglect Trop Dis 2014;8:e3257.
  10. Habing G, S Kessler, DF Mollenkopf, TE Wittum, T Anderson, B Behravesh, J Lavin, MM Erdman. Distribution and diversity of Salmonella strains in shipments of hatchling poultry, United States, 2013. Zoonoses Pub Health 2014;doi:10.1111/zph.12157.
  11. Pornsukarom S, P Patchanee, MM Erdman, PF Cray, TE Wittum, J Lee, WA Gebreyes. Comparative Phenotypic and Genotypic Analyses of Salmonella Rissen that Originated from Food Animals in Thailand and United States. Zoonoses Pub Health 2014;doi: 10.1111/zph.12144.
  12. Tadesse DA, PB Bahnson, JA Funk, WEM Morrow, MJ Abley, VA Ponte, S Thakur, TE Wittum, FJ DeGraves, PJ Rajala-Schultz, WA Gebreyes. Yersinia enterocolitica of Porcine Origin: Carriage of Virulence Genes and Genotypic Diversity. Foodborne Pathogens and Disease 2013;10:80-86.
  13. Mollenkopf DF, JM Mirecki, JB Daniels, JA Funk, SC Henry, GE Hansen, PR Davies, TS Donovan, and TE Wittum, Escherichia coli and Klebsiella pneumoniae producing CTX-M cephalosporinase from swine finishing barns and their association with antimicrobial use. Appl Environ Micro 2013;79:1052-1054.
  14. Wittum TE. The challenge of regulating agricultural ceftiofur use to slow the emergence of resistance to extended-spectrum cephalosporins. Appl Environ Micro 2012;78:7819-7821.
  15. Wittum TE, DF Mollenkopf, MM Erdman. Detection of Salmonella enterica isolates producing CTX-M cephalosporinase in US livestock populations. Appl Environ Micro 2012;78:7487-7491.
  16. Mollenkopf, DF; MF Weeman; JB Daniels; MJ Abley; JL Mathews; WA Gebreyes; TE Wittum. Variable within- and between-Herd Diversity of CTX-M Cephalosporin-Bearing Escherichia coli Isolates from Dairy Cattle. Appl Environ Micro 2012;78:4552-4560.
  17. Walker, WL, WB Epperson, TE Wittum, LK Lord, PJ Rajala-Schultz, and J Lakritz. Characteristics of dairy calf ranches: Morbidity, mortality, antibiotic use practices, and biosecurity and biocontainment practices. J Dairy Sci 2012;95:2204-2214.
  18. Abley MJ; TE Wittum; SJ Moeller; HN Zerby; JA Funk. Quantification of Campylobacter in Swine before, during, and after the Slaughter Process. J Food Protect 2012;75:139-143.
  19. Abley MJ; TE Wittum; HN Zerby; JA Funk. Quantification of Campylobacter and Salmonella in cattle before, during and after the slaughter process. Foodborne Pathogens and Disease 2012;9:113-119.
  20. Landers, TF; BA Cohen; TE Wittum; EL Larson. Antibiotic use in food animals: Perspective, policy & potential. Public Health Reports 2012;127:4-22.
  21. Lutz, EA; MJ McCarty; DF Mollenkopf; JA Funk; WA Gebreyes; TE Wittum. Ceftiofur use in finishing swine barns and the recovery of fecal Escherichia coli or Salmonella spp. resistant to ceftriaxone. Foodborne Pathogens and Disease 2011;8:1229-1234.
  22. Tadesse, DA; PB Bahnson; JA Funk; S Thakur; WE Morrow; TE Wittum; FJ DeGraves; PJ Rajala-Schultz; WA Gebreyes. Prevalence and Antimicrobial Resistance Profile of Campylobacter spp. Isolated from Conventional and Antimicrobial Free Production Systems from Different US Regions. Foodborne Pathogens and Disease 2011;10;367-374.
  23. Morley, PS; DA Dargatz; DR Hyatt; GA Dewell; JG Patterson; BA Burgess; TE Wittum. Effects of Restricted Antimicrobial Exposure on Antimicrobial Resistance in fecal Escherichia coli from Feedlot Cattle. Foodborne Pathogens and Disease 2011;8:87-98.
  24. Mollenkopf, DM; KE Kleinhenz; JA Funk; WA Gebreyes; TE Wittum. Salmonella enterica and Escherichia coli Harboring blaCMY in Retail Beef and Pork Products. Foodborne Pathog Dis 2011;8:333-336.
  25. Wittum, TE; DF Mollenkopf; JB Daniels; AE Parkinson;  JL Mathews; PR Fry; MJ Abley; WA Gebreyes. CTX-M-Type Extended-Spectrum β-Lactamases Present in Escherichia coli from the Feces of Cattle in Ohio, United States. Foodborne Pathogens and Disease 2010;7:1575-1579.
  26. Mollenkopf, DM; C Glendening; TE Wittum; JA Funk; LA Tragesser; PS Morley. Association of dry cow therapy with the antimicrobial susceptibility of fecal coliform bacteria in dairy cows. Prev Vet Med 2010;96:30.
  27. Landers, TF; AE Hoet; TE Wittum. Swab Type, Moistening, and Preenrichment for Staphylococcus aureus on Environmental Surfaces. J Clin Micro 2010;48:2235-2236.
  28. Harvey, R, JA Funk, TE Wittum, AE Hoet. A metagenomic approach for determining prevalence of tetracycline resistance genes in the fecal flora of conventionally raised feedlot steers and feedlot steers raised without antimicrobials. Am J Vet Res 2009;70:198–202.
  29. Heider, LC, AE Hoet, TE Wittum, ML Khaitsa, BC Love, CL Huston, PS Morley, JA Funk, WA Gebreyes. Genetic and Phenotypic Characterization of the blaCMY Gene from Escherichia coli and Salmonella enterica Isolated from Food-Producing Animals, Humans, the Environment, and Retail Meat. Foodborne Pathog Dis 2009;6:1235-1240.
  30. Pandya, M, TE Wittum, DA Tadesse, WA Gebreyes, AE Hoet. Environmental Salmonella surveillance in the Ohio State University veterinary teaching hospital. Vector Borne Zoonotic Dis 2009;9:649-654.
  31. Heider, LC, JA Funk, AE Hoet, RW Meiring, WA Gebreyes, and TE Wittum. Escherichia coli and Salmonella enterica with reduced susceptibility to ceftriaxone among Ohio dairy farms. Am J Vet Res 2009;70:389-393.
  32. Heider, LC, RW Meiring, AE Hoet, WA Gebreyes, JA Funk, and TE Wittum. Evaluation of vaccination with a commercial subunit vaccine on shedding of Salmonella enterica in subclinically infected dairy cows. J Am Vet Med Assoc 2008;233:466–469.
  33. Chen, J, Z Yu, FC Michel, T Wittum, and M Morrison. Development and Application of Real-Time PCR Assays for Quantification of erm Genes Conferring Resistance to Macrolides-Lincosamides-Streptogramin B in Livestock Manure and Manure Management Systems. Appl Environ Micro 2007;73:4407-4416.
  34. Funk, JA, TE Wittum, JT LeJeune, PJ Rajala-Schultz, A Bowman, A Mack. Evaluation of stocking density and subtherapeutic chlortetracycline on Salmonella enterica subsp. enterica shedding in growing swine. Vet Micro 2007;124:202-208.
  35. Keen, JE, TE Wittum, JR Dunn, JL Bono, and LM Durso. Shiga-toxigenic Escherichia coli (STEC) O157 prevalence in US agricultural fair livestock and persistence in the post-fair environment. Emerging Inf Dis 2006;12:780-786.