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Keri Norman

Assistant Professor


Department: VIBS

Photo of Norman, Keri


  • PhD Biomedical Sciences, Texas A&M University 2010
  • BS Zoology, Miami University 2001

Scholarly Interests

My primary area of interest is in molecular epidemiology and in particular investigating bacterial pathogen populations in the interface between humans and agricultural animals. I use molecular techniques such as next generation sequencing to investigate how bacterial populations change in response to selection pressures. One example is the unintended consequences of antimicrobial use on E. coli and Salmonella populations in the gut flora of cattle and swine. I am also interested in using whole genome sequencing to compare bacterial populations and improve upon current typing techniques. The increase of human community acquired cases of Clostridium difficile has led to the investigation of C. difficile as a potential foodborne pathogen and identified the need for an improved typing method for strains commonly found in animals and humans.


Comparison of whole genome sequences from human and non-human Escherichia coli O26 strains
Norman KN, Clawson ML, Strockbine NA, Mandrell RE, Johnson R, Ziebell K, Zhao S, Fratamico PM, Stones R, Allard MW and Bono JL
Frontiers in Cellular and Infection Microbiology. 2015
Effect of Proximity to a Cattle Feedlot on Escherichia coli O157:H7 Contamination of Leafy Greens and Evaluation of the Potential for Airborne Transmission
Berry ED, Wells JE, Bono JL, Woodbury BL, Kalchayanand N, Norman KN, Suslow TV, López-Velasco G, Millner PD
Applied and Environmental Microbiology. 2015
Survey of Clostridium difficile in retail seafood in College Station, Texas. Food Additives and Contaminants
Norman KN, Harvey RB, Andrews K, Hume ME, Callaway TR, Anderson RC, Nisbet DJ
Food Addit Contam . 2014 31(6):1127-9.
Comparison of antimicrobial susceptibility among Clostridium difficile isolated from an integrated human and swine population in Texas
Norman KN, Scott HM, Harvey RB, Norby B, Hume ME
Foodborne Pathog Disease. 2014 11(4):257-64.
Association of nucleotide polymorphisms within the O-antigen gene cluster of Escherichia coli O26, O45, O103, O111, O121, and O145 with serogroups and genetic subtypes
Norman KN, Strockbine NA, Bono JL
Appl Environ Microbiol. 2012 78(18):6689-703.
Clostridium difficile in poultry and poultry meat.
Harvey RB, Norman KN, Andrews K, Hume ME, Scanlan CM, Callaway TR, Anderson RC, Nisbet DJ.
Foodborne Pathog Dis. 2011 8(12):1321-3.
Prevalence and genotypic characteristics of Clostridium difficile in a closed and integrated human and swine population.
Norman KN, Scott HM, Harvey RB, Norby B, Hume ME, Andrews K
Appl Environ Microbiol. 2011 77(16):5755-60.
Clostridium difficile in retail meat and processing plants in Texas.
Harvey RB, Norman KN, Andrews K, Norby B, Hume ME, Scanlan CM, Hardin MD, Scott HM.
J Vet Diagn Invest. 2011 23(4):807-11.
Varied prevalence of Clostridium difficile in an integrated swine operation.
Norman KN, Harvey RB, Scott HM, Hume ME, Andrews K, Brawley AD
Anaerobe. 2009 15(6):256-60.

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