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John J. Maurer

Postdoctoral Fellow, Bacterial Genetics, Washington University-St. Louis, 1990-1993

PhD, Microbiology and Immunology, University of Texas Health Science Center at San Antonio, 1990

BS, Microbiology, Purdue University-West Lafayette, 1984

The Lee-Maurer research concentrates on the ecology of antimicrobial resistance in poultry production and microbe-microbe/host microbe interactions that promote animal health and pathogen exclusion.  The group has also focused on the molecular epidemiology of veterinary and zoonotic bacterial pathogens, with emphasis on understanding pathogen transmission within poultry production systems.

1.        Bythwood, T., V. Soni, K. Lyons, A. Hurley-Bacon, M. D. Lee, C. Hofacre, S. Sanchez, and J. J. Maurer. 2019. Emergence of antimicrobial resistant Salmonella enterica Typhimurium colonizing chickens: the impact of plasmids, genotype, bacterial communities and antibiotic usage on resistance. Front. Sustain. Food Syst. (Accepted)

2.        Rimet, C.-S., J. J. Maurer, L. Pickler, L. Stabler, K. Thompson, R. Berghaus, M. Lee, A. Villegas, and M. Franca. 2019. Salmonella harborage sites in infected poultry that may contribute to contamination of ground meat. Front. Sustain. Food Syst. 3, Article 2: 1-11.

3.        Liljebjelke, K. A., C. Hofacre, D. G. White, S. Ayers, M. D. Lee, and J. J. Maurer. 2017. Diversity of antimicrobial resistance phenotypes in Salmonella isolated from commercial poultry farms. Front. Vet. Sci. 4, Article 96: 1-9.

4.        Ricketts. C., L. Pickler, J. Maurer, S. Ayyampalayam, M. García, and N. M. Ferguson-Noel. 2016. Identification of strain-specific sequences that distinguish a Mycoplasma gallisepticum vaccine strain from field isolates. J. Clin. Microbiol. 55:244-252. (PMID: 27847370)

5.        Hernandez, S. M., Catharine N. Welch, V. E. Peters, E. K. Lipp, S. Curry,  M. J. Yabsley, S. Sanchez, A. Presotto, P. Gerner-Smidt, K. Hise, E. Hammond, W. M. Kistler, M. Madden, A. Conway, T. Kwan, and J. J. Maurer. 2016. Urbanized white ibises (Eudocimus albus) as carriers of Salmonella enterica of significance to public health and wildlife. PLOS One 11(10):e0164402. (PMID: 27768705)

6.        Maurer, J. J., G. Martin, S. Hernandez, Y. Cheng, P. Gerner-Smidt, K. B. Hise, M. T. d’Angleo, D. Cole, S. Sanchez, M. Madden, S. Valeika, A. Presotto, and E. K. Lipp. 2015. Diversity and persistence of Salmonella enterica strains in rural landscapes in the Southeastern United States. PLOS One 10(7):e0128937.

7.        Mundt, E., S. R. Collett, R. Berghaus, A. A. Pedroso, M. D. Lee, and J. J. Maurer. 2015. Can bacteriotherapy using commercially available probiotics, prebiotic, and organic acids ameliorate the symptoms associated with runting stunting syndrome in broiler chickens? Avian Dis. 59:201-206.

8.        Cheng, Y., A. A. Pedroso, S. Porwollik, M. McClelland, M. D. Lee, T. Kwan, K. Zamperini, V. Soni, H.S. Sellers, S. M. Russell, and J. J. Maurer. 2015. rpoS-regulated core genes involved in the competitive fitness of Salmonella enterica serovar Kentucky in the intestines of chickens. Appl. Environ. Microbiol. 81:502-514.

9.        Pedroso, A. A., A. L. Hurley-Bacon, A. S. Zedek, T. W. Kwan, A. P. O. Jordan, G. Avellaneda, C. L. Hofacre, B. B. Oakley, S. R. Collett, J. J. Maurer, and M. D. Lee. 2013. Can probiotics improve the environmental microbiome and resistome of commercial poultry production? Inter. J. Environ. Res. Pub. Hlth. 10:4534-4559.

10.      Minicozzi, J., S. Sanchez, M. Lee, P. Holt, C. Hofacre, and J. Maurer. 2013. Development of recombinant flagellar antigens for serological detection of Salmonella enterica serotypes Enteritidis, Hadar, Heidelberg, and Typhimurium in poultry. Agriculture 3: 381-397.

11.      Hernandez, S. M., K. Keel, S. Sanchez, E. Trees, P. Gerner-Smidt, J. K. Adams, Y. Cheng, A. Ray, G. Martin, A. Presotto, M. G. Ruder, J. Brown, D. S. Biehert, W. Cottrell, and J. J. Maurer. 2012. Epidemiology of a Salmonella enterica subsp. enterica serovar Typhimurium strain associated with a songbird outbreak.  Appl. Environ. Microbiol. 78:7290-7298.

12.      Berghaus, R. D., D. L. Mathis, R. K Bramwell, K. S. Macklin, J. L. Wilson, M. J. Wineland, J. J. Maurer, and M. D. Lee. 2012. Multi-level analysis of environmental Salmonella prevalences and management practices on 49 broiler breeder farms in four southeastern states, U.S.A. Zoonoses Publ. Hlth. 59:365-374.

13.      Mathis, D. L., R. D. Berghaus, M. D. Lee, and J. J. Maurer. 2011. Variation in Salmonella Enteritidis RAPD-PCR patterns may not be due to genetic differences. Avian Dis. 55:620-625.

14.      Maurer, J. J., M. D. Lee, Y. Cheng+, and A. Pedroso. 2011. An allelotyping PCR for identifying Salmonella enterica serovars Enteritidis, Hadar, Heidelberg, and Typhimurium. JoVE. (

15.      Berghaus, R. D., S. G. Thayer, J. J. Maurer, and C. L. Hofacre. 2011. Effect of vaccinating breeder chickens with a killed Salmonella vaccine on Salmonella prevalences and loads in breeder and broiler chicken flocks. J. Food Prot. 74:727-734

16.      Dorea, F., D. J. Cole, C. Hofacre, K Zamperini, D. Mathis, M. P. Doyle, M. D. Lee, and J. J. Maurer. 2010. Effect of Salmonella vaccination of chicken breeders on reducing carcass contamination of broiler chickens in commercial poultry operations. Appl. Environ. Microbiol. 76:7820-7825.

17.      Soyer, Y., A. Moreno Switt, M.A. Davis, J. Maurer, P.L. McDonough, D. J. Schoonmaker-Bopp, N. B. Dumas, T. Root, L.D. Warnick, Y.T. Gröhn and M. Wiedmann. 2009. Salmonella 4,5,12:i:-: an emerging Salmonella serotype that represents multiple distinct clones. J. Clin. Microbiol. 47:3546-3556.

18.      Hong, Y., T. Liu1, M. D. Lee, C. L. Hofacre, M. Maier, D. G. White, S. Ayers, L. Wang, R. Berghaus, and J. Maurer. 2009. A rapid screen of broth enrichments for Salmonella enterica serovars Enteritidis, Hadar, Heidelberg, and Typhimurium using an allelotyping multiplex PCR that targets O and H antigen alleles. J. Food Prot. 72:2198-2201.