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REFEREED ARTICLES (First author* = Dr. Ivanek's graduate student, intern, resident, post-doctoral associate, or undergraduate student while the work was being done.)

  1. Ivanek, R., Gröhn, Y.T., Tauer, L. W., and Wiedmann, M.: The total cost and benefit of Listeria monocytogenes food safety measures. Critical Reviews in Food Science and Nutrition2004, 44: 513-523.
  2. Ivanek, R., Snary, E. L., Cook, A.J.C., and Gröhn, Y.T.: A mathematical model for the transmission of Salmonella Typhimurium within a grower-finisher pig herd in Great Britain. Journal of Food Protection, 2004, 67: 2403-2409.
  3. Ivanek, R., Gröhn, Y.T., Wiedmann, M., and Wells, M.T.: A mathematical model of Listeria monocytogenes cross-contamination in a fish processing plant. Journal of Food Protection, 2004, 67: 2688-2697.
  4. Hu, Y., Gall, K., Ho, A. J., Ivanek, R., Gröhn, Y. T., and Wiedmann, M.: Daily variability of Listeria contamination patterns in a cold-smoked salmon processing operation. Journal of Food Protection, 2006, 69: 2123-2133.
  5. Ivanek, R., Gröhn, Y.T., Wiedmann, M.: Listeria monocytogenes in multiple habitats and host populations: review of available data for mathematical modeling.Foodborne Pathogens and Disease, 2006, 3(4):319-336. (review)
  6. Ivanek, R., Gröhn, Y.T., Ho, A. J., and Wiedmann, M.: Markov chain approach to analyze the dynamics of pathogen fecal shedding -Example of Listeria monocytogenes shedding in a herd of dairy cattle. Journal of Theoretical Biology. 2007, 245: 44–58.
  7. Tauer, L. W., Nightingale, C.R., Ivanek, R., Gröhn, Y.T., and Wiedmann, M.: Optimal levels of inputs to control Listeria monocytogenes contamination at a smoked fish plant. Agribusiness: an International Journal, 2007, 23(2): 229-244.
  8. McGann, P., Ivanek, R., Wiedmann, M. and Boor, K.J.: Temperature-dependent expression of Listeria monocytogenes internalin and internalin-like genes suggests functional diversity for these proteins among the listeriae. Applied & Environmental Microbiology, 2007, Vol. 73(9): 2806-2814.
  9. Ho, A.J., Ivanek, R., Gröhn, Y.T., Nightingale, K.K., and Wiedmann M.: Listeria monocytogenes fecal shedding in dairy cattle shows high levels of day-to-day variation and includes outbreaks and sporadic cases of shedding of specific L. monocytogenes subtypes. Preventive Veterinary Medicine, 2007, 80:287-305.
  10. Gröhn, Y., Hertl, J., Ivanek, R., Abou-Zeid, K., and Wiedmann M.: How University Researchers Can Contribute to Farm-to-Table Risk Assessments: Listeria monocytogenes as an Example. Foodborne Pathogens and Disease 2007, 4(4): 527-537.
  11. Lanzas, C., Brien, S., Ivanek, R., Lo, Y., Chapagain, P. P., Ray, K.A., Ayscue, P., Warnick L. D. and Gröhn Y.T.: The effect of heterogeneous infectious period and contagiousness on the dynamics of Salmonella transmission. Epidemiology and Infection 2008, 16:1-15.
  12. Mc Gann, P., Raengpradub, S., Ivanek, R., Wiedmann, M. and Boor, K. J.: Differential regulation of Listeria monocytogenes internalin and internalin-like genes by sigma B and PrfA as revealed by subgenomic microarray analyses. Foodborne Pathogens and Disease, 2008, 5(4): 417-435.
  13. Ivanek, R., Gröhn, Y.T., Wells, M.T., Raengpradub, S., Kazmierczak, M.J., and Wiedmann, M.: Extreme value theory in analysis of differential expression in microarrays where either only up- or down-regulated genes are relevant or expected. Genetics Research, 2008, 90: 347-361.
  14. Lanzas, C., Warnick, L.D., Ivanek, R., Ayscue, P., Nydam, D. and Gröhn, Y.T.: The risk and control of Salmonella outbreaks in calf-raising operations: a mathematical modeling approach. Veterinary Research, 2008, 39:61.
  15. Pradhan, A.K., Ivanek, R., Gröhn, Y.T., Geornaras, I., Sofos, J., and Wiedmann M.: Quantitative Risk Assessment for Listeria monocytogenes in Selected Categories of Deli Meats: Impact of Lactate-Diacetate on Listeriosis Cases and Deaths. Journal of Food Protection, 2009, 72(5): 978–989.
  16. Ayscue P., Lanzas C., Ivanek R., and Gröhn Y.T.: Modeling On-Farm Escherichia coli O157:H7 Population Dynamics. Foodborne Pathogens and Disease, 2009, 6(4): 461-470.
  17. Alexander, K. A., Warnick, L. D., Cripps, C. J., McDonough, P. L., Gröhn, Y. T., Wiedmann, M., Reed, K. E., James, K. L., Soyer, Y., and Ivanek, R.: Fecal shedding of, antimicrobial resistance in, and serologic response to Salmonella Typhimurium in dairy calves. JAVMA, 2009, 235(6): 739-748.
  18. Ivanek, R., Gröhn, Y.T., Lembo Jr, A.J., Sauders, B.D. and Wiedmann, M.: Modeling of spatially referenced environmental and meteorological factors influencing the probability of Listeria spp. isolation from natural environments. Applied & Environmental Microbiology, 2009, 75(18): 5893-5909.
  19. Lanzas, C., Ayscue, P., Ivanek, R., and Gröhn, Y.T.: Model or Meal? Farm animal populations as models for infectious diseases of humans. Nature Reviews Microbiology, 2010, 8: 139-148. February issue, doi:10.1038/nrmicro2268. (review) Article featured on the journal cover.
  20. Pradhan, A.K., Ivanek, R., Gröhn, Y.T., Bukowski, R., Geornaras, I., Sofos, J., and Wiedmann M.: Quantitative Risk Assessment of Listeriosis-associated Deaths due to Listeria monocytogenes Contamination of Deli Meats Originating from Manufacture and Retail. Journal of Food Protection, 2010, 73(4):620-30.
  21. Bani-Yaghoub*, M., Gautam, R., Döpfer, D. Kaspar, D., Ivanek, R.: Effectiveness of environmental decontamination as an infection control measure. Epidemiology and Infection, 2012, 140(3):542-53. [Epub ahead of print 2011 May 18].
  22. Bhattarai*, R, Budke, C.M., Carabin, H., Proaño, J.V., Flores-Rivera, J., Corona, T., Cowan, L.D., Ivanek, R., Snowden, K.F., and Flisser, A.: Quality of Life in Patients with Neurocysticercosis in Mexico. 2011. Am. J. Trop. Med. Hyg, 2011, 84(5):782-786.
  23. Pradhan, A.K., Ivanek, R., Gröhn, Y.T., Bukowski, R., and Wiedmann M.: Public Health Impact of Listeria monocytogenes Cross-contamination of Deli Meats at Retail Level. Journal of Food Protection, 2011, 74(11):1860-8.
  24. Gautam*, R., Bani-Yaghoub, M., H. Neill, W., Döpfer, D. Kaspar, D., Ivanek, R.: Modeling the effect of seasonal variation in ambient temperature on the transmission dynamics of a pathogen with a free-living stage: Example of Escherichia coli O157:H7 in a dairy herd. Preventive Veterinary Medicine, 2011, 102(1):10-21.
  25. Garcia-Mazcorro*, J., Lanerie, D., Dowd, S., Paddock, C., Grützner, N., Steiner, J., Ivanek, R., and Suchodolski, J.: Effect of a multi-species synbiotic formulation on fecal bacterial microbiota of healthy cats and dogs as evaluated by pyrosequencing. FEMS Microbiology Ecology, 2011, 78(3):542-54.
  26. Gonzales, TK, Kulow, M, Park, D-J, Kaspar, CW, Anklam, KS, Pertzborn, KM, Kerrish, KD, Ivanek, R., and Döpfer, D.: A High-Throughput Open-Array qPCR Gene Panel to Identify, Virulotype, and Subtype O157 and non-O157 Enterohemorrhagic Escherichia coli. Molecular & Cellular Probes, 2011, 25(5-6): 222:230.
  27. Bhattarai* R., Budke, C.M, Carabin, H., Proaño, J.V., Flores-Rivera, J., Corona, T., Ivanek, R., Snowden, K.F., Flisser, A.: Estimating the non-monetary burden of neurocysticercosis in Mexico. PLoS neglected tropical diseases. 02/2012, 6(2):e1521.
  28. Szonyi*, B., Srinath, I., Schwartz, A., Clavijo, A., Ivanek, R.: Spatio-temporal epidemiology of Tritrichomonas foetus infection in Texas bulls based on state-wide diagnostic laboratory data. Veterinary parasitology, 05/2012, 186(3-4):450-455.
  29. Ivanek, R., Österberg, J., Gautam, R., and Sternberg Lewerin, S.: Salmonella Fecal Shedding and Immune Responses are Dose- and Serotype- Dependent in Pigs. PLoS ONE, 05/2012, 7(4): e34660. doi:10.1371/journal.pone.0034660. Article featured by JAVMA (Vol. 241, No. 1, page 29) /media/550217/javma%20on%20salmonella%20plos%20one%20paper.pdf and tamuTimes’ “12 Impacts for 2012”
  30. Lidbury*, J., Suchodolski, J., Ivanek, R., Steiner, J.: Assessment of the variation associated with repeated measurement of gastrointestinal transit times and assessment of the effect of oral ranitidine on gastrointestinal transit times using a wireless motility capsule system in dogs. Veterinary Medicine International, vol. 04/2012, Article ID 938417, doi:10.1155/2012/938417.
  31. Bani-Yaghoub*, M., Gautam, R., Shuai, Z., van den Driessche, P., Ivanek, R.: Reproduction numbers for infections with free-living pathogens growing in the environment. Journal of Biological Dynamics, 06/2012; 6(2):923-40. Epub 2012 Jun 28.
  32. Park*, S., Szonyi, B., Gautam, R., Nightingale, K., Anciso, J., Ivanek, R.: Risk factors for microbial contamination in fruits and vegetables at the pre-harvest level: A systematic review. Journal of Food Protection, 2012, 75(11):2055-2081. (systematic review)
  33. Gautam*, R., Döpfer, D., Kaspar, C., Kulow, M., Gonzales, T., M. Pertzborn, K., Carroll, R.J., Grant, W., Ivanek, R.: The strain-specific dynamics of Escherichia coli O157:H7 fecal shedding in cattle post inoculation. Journal of Biological Dynamics 06/2012, 6(2): 1052-1066.
  34. Kulow, M., Gonzales, T., Pertzborn, K., Dahm, J., Miller, B., Park, D., Gautam, R., Kaspar, C., Ivanek, R., and Döpfer, D.: Differences in colonization and shedding patterns after oral challenge of cattle with three Escherichia coli O157:H7 strains. Applied & Environmental Microbiology 2012, Nov, 78(22):8045-8055. Published ahead of print 7 September 2012.
  35. Park, D., Stanton, E., Ciezki, K., Parrell, D., Bozile, M., Pike, D., Forst, S., Cheol Jeong, K., Ivanek, R., Dopfer, D., and Kaspar, C.: Evolution of stx2-Prophage in Persistent Bovine Escherichia coli O157:H7 Strains. Applied & Environmental Microbiology 2013, 79(5):1563-1572. Published ahead of print 28 December 2012
  36. Gautam*, R., Srinath, I., Clavijo, A., Szonyi, B., Bani-Yaghoub, M., Park, S., Ivanek, R.: Identifying high risk areas of human Coccidioidomycosis in Texas using serology data from dogs. Zoonoses and Public Health, 2013 Mar;60(2):174-81. DOI: 10.1111/j.1863-2378.2012.01526.x. Epub 2012 Aug 1.
  37. Park*, S., Navratil, S., Gregory, A., Bauer, A., Srinath, I., Jun, M., Szonyi, B., Nightingale, K., Anciso, J. and Ivanek, R.: Generic Escherichia coli contamination of spinach at the preharvest level: The role of farm management and environmental factors. Applied & Environmental Microbiology. 07/2013, 79(14):4347-4358. Published ahead of print 10 May 2013. doi: 10.1128/AEM.00474-13. Article chosen among all of the articles published by the American Society for Microbiology (ASM) in June 2013 for a press release and to be included in Microbe's Journal Highlights section
  38. Gautam*, R., Pinedo, P.J., Park, S., Ivanek, R.: The distribution of drinking water-to-cattle ratios in the summer across four feedlots in the Texas High Plains. Agricultural Sciences. 2013. Jun, 4(6). DOI: 10.4236/as.2013.46040.
  39. Szonyi*, B., Swinford, A., Clavijo, A., and Ivanek, R.: Re-emergence of pigeon fever (Corynebacterium pseudotuberculosis) infection in Texas horses: epidemiologic investigation of laboratory diagnosed cases. Journal of Equine Veterinary Science. Published online on July 31, 2013. DOI: 10.1016/j.jevs.2013.06.006.
  40. Wang*, X., Gautam, R., Pinedo, P.J., Allen, L.J.S. and Ivanek, R.: A stochastic model for transmission, extinction and outbreak of Escherichia coli O157:H7 in cattle as affected by ambient temperature and cleaning practices. Journal of Mathematical Biology. 2014. 69:501-532. Published online on July 18, 2013. DOI: 10.1007/s00285-013-0707-1.
  41. Gautam*, R., Lahodny, G., Bani-Yaghoub, M., Morley, P.S., Ivanek, R.: Understanding the role of cleaning in the control of Salmonella Typhimurium in grower-finisher pigs: a modeling approach. Epidemiology and Infection. Published online on August 07, 2013. DOI:
  42. Zhang, X.H., Ye, Q., Liu, Y.D., Li, B., Ivanek, R., He, K..W.: Development of a LAMP assay for Rapid Detection of Different Intimin Variants of Attaching and Effacing Microbial Pathogens. Journal of Medical Microbiology. Published online on July 26, 2013. DOI: 10.1099/jmm.0.054551-0.
  43. Karki*, S., Lupiani, B., Budke, C., S. Manandhar, Ivanek, R.: Cross-sectional serosurvey of avian influenza antibodies presence in domestic ducks of Kathmandu, Nepal. Zoonoses and Public Health.  Article first published online: 31 December 2013. DOI: 10.1111/zph.12097
  44. Stanton, E., Park, D., Döpfer, D., Ivanek, R., and Kaspar, C.W.: Phylogenetic characterization of Escherichia coli O157:H7 based on IS629 distribution and Shiga toxin genotype. Microbiology, 2014 Mar;160(Pt 3):502-13. doi: 10.1099/mic.0.073437-0.
  45. Park*, S., Navratil, S., Gregory, A., Bauer, A., Srinath, I., Szonyi, B., Nightingale, K., Anciso, J., Jun, M., Han, D., Lawhon S. and Ivanek, R.: Farm management, environment and weather factors jointly affect the probability of spinach contamination with generic Escherichia coli at the preharvest level. Applied & Environmental Microbiology. Published ahead of print 7 February 2014, DOI: 10.1128/AEM.03643-13. Article featured on the journal cover
  46. Gautam*, R., Kulow, M., Park, D., Gonzales, T., Dahm, J., Shiroda, M., Stasic, A.J., Döpfer, D., Kaspar, C., Ivanek, R.: Transmission of Escherichia coli O157:H7 among cattle is influenced by the level of environmental contamination. Epidemiology and Infection, 2015 Jan;143(2):274-87. doi: 10.1017/S0950268814000867. Epub 2014 Apr 14.
  47. Lahodny Jr*., G.E., Gautam, R., and Ivanek, R.: Estimating the Probability of an Extinction or Major Outbreak for an Environmentally-transmitted Infectious Disease. Journal of Biological Dynamics 2014 Sep 8:1-28. [Epub ahead of print]
  48. Gomez, S.A., Kulow, M., Anklam, K.S. Park, D., Kaspar, C.W., Ivanek, R., Döpfer, D.: Gene markers of generic Escherichia coli associated with colonization and persistence of Escherichia coli O157 in cattle. Preventive Veterinary Medicine, 2014 Nov 1;117(1):140-8. doi: 10.1016/j.prevetmed.2014.07.009. Epub 2014 Jul 25.
  49. Ivanek, R. and Lahodny* Jr, G.E.: From the bench to modeling – R0 at the interface between empirical and theoretical approaches in epidemiology of environmentally-transmitted infectious diseases. Preventive Veterinary Medicine, 2015 Feb 1;118(2-3):196-206. doi: 10.1016/j.prevetmed.2014.11.003. Epub 2014 Nov 20.
  50. Lidbury*, J.A., Ivanek, R., Suchodolski, J., Steiner, J.M.: Putative precipitating factors in 118 dogs with hepatic encephalopathy (1991−2011). Journal of the American Veterinary Medical Association (In Press)
  51. Karki*, S., B. Lupiani, C.M. Budke, N.P.S. Karki, J. Rushton and R. Ivanek.: Cost-benefit analysis of avian influenza control in Nepal. Rev. Sci. Tech. Off. Int. Epiz. 2015. 34(3),
  52. Park*, S., Navratil, S., Gregory, A., Bauer, A., Srinath, I., Szonyi, B., Nightingale, K., Anciso, J., Jun, M., Han, D., Lawhon, S., and Ivanek, R.: Multifactorial Effects of Ambient Temperature, Precipitation, Farm Management, and Environmental Factors Determine the Level of Generic Escherichia coli Contamination on Preharvested Spinach. Applied and Environmental Microbiology, 2015. 81:2635–2650. doi:10.1128/AEM.03793-14.
  53. Castro-Ibáñez, I., Gil, M.I., Tudela, J.A., Ivanek, R., Allende, A.: Assessment of microbial risk factors and impact of meteorological conditions during production of baby spinach in the Southeast of Spain. Food Microbiology, 49, August 2015, Pages 173–181; doi:10.1016/