# positions[].organizations[].parent[].label
College of Veterinary Medicine and Biomedical Sciences

# positions[].organizations[].parent[].label
School of Veterinary Medicine and Biomedical Sciences

# overview
My primary area of interest is in molecular epidemiology and in particular investigating selection pressures driving bacterial pathogen populations at the interface between humans, agricultural animals, and the environment. 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 cattle and swine and their environments. I am also interested in using whole genome sequencing to compare bacterial populations and improve upon current typing techniques.

# keywords[]
2.2 Factors Relating To The Physical Environment

# keywords[]
2.2 Factors Relating To The Physical Environment

# keywords[]
3214 Pharmacology And Pharmaceutical Sciences

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# educationAndTraining[].organization.label
Miami University - (Oxford, Ohio, United States)

# educationAndTraining[].organization.label
Texas A&M University - (College Station, Texas, United States)

# publications[].label
Patterns of antimicrobial drug use in veterinary primary care and specialty practice: A 6-year multi-institution study.

# publications[].label
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.

# publications[].label
Whole-genome sequences of Campylobacter coli and Campylobacter jejuni isolates from rhesus macaques (Macaca mulatta) with and without intestinal disease.

# publications[].label
A Preliminary Study on the Presence of Salmonella in Lymph Nodes of Sows at Processing Plants in the United States.

# publications[].label
Comparison of antimicrobial susceptibility among Clostridium difficile isolated from an integrated human and swine population in Texas.

# publications[].label
Use of critically important antimicrobial classes early in life may adversely impact bacterial resistance profiles during adult years: potential co-selection for plasmid-borne fluoroquinolone and macrolide resistance via extended-spectrum beta-lactam use in dairy cattle.

# publications[].label
Identification of a Plasmid-Mediated Quinolone Resistance Gene in Salmonella Isolates from Texas Dairy Farm Environmental Samples.

# publications[].label
Effect of proximity to a cattle feedlot on Escherichia coli O157:H7 contamination of leafy greens and evaluation of the potential for airborne transmission.

# publications[].label
Macrolide-susceptible probiotic Enterococcus faecium ST296 exhibits faecal-environmental-oral microbial community cycling among beef cattle in feedlots.

# publications[].label
Antimicrobial Resistance Genes in Clinical Salmonella Isolates from Cattle in the Texas Panhandle, USA

# publications[].label
Varied prevalence of Clostridium difficile in an integrated swine operation.

# publications[].label
Clostridium difficile in poultry and poultry meat.

# publications[].label
A Longitudinal Study on the Dynamics of Salmonella enterica Prevalence and Serovar Composition in Beef Cattle Feces and Lymph Nodes and Potential Contributing Sources from the Feedlot Environment.

# publications[].label
Population dynamics of enteric Salmonella in response to antimicrobial use in beef feedlot cattle.

# publications[].label
Normative ocular data for juvenile and adult Japanese quail (Coturnix japonica).

# publications[].label
Effects of Tylosin, a Direct-Fed Microbial and Feedlot Pen Environment on Phenotypic Resistance among Enterococci Isolated from Beef Cattle Feces.

# publications[].label
An Experimental Field Trial Investigating the Use of Bacteriophage and Manure Slurry Applications in Beef Cattle Feedlot Pens for Salmonella Mitigation.

# publications[].label
Assessing the Resilience of Enteric Bacteria in Manure in Response to Changes in Relative Humidity and UV-B Light

# publications[].label
Effects of the Antibiotic Alternatives Zinc and Menthol on Phenotypic Antimicrobial Resistance of E. coli and Enterococcus spp. in Beef Cattle

# publications[].label
Diversity of Campylobacter spp. circulating in a rhesus macaque (Macaca mulatta) breeding colony using culture and molecular methods.

# publications[].label
Quantitative dynamics of Salmonella and E. coli in feces of feedlot cattle treated with ceftiofur and chlortetracycline.

# publications[].label
Distribution of the pco Gene Cluster and Associated Genetic Determinants among Swine Escherichia coli from a Controlled Feeding Trial.

# publications[].label
Serotype Diversity and Antimicrobial Resistance among Salmonella enterica Isolates from Patients at an Equine Referral Hospital.

# publications[].label
High-Resolution Genomic Comparisons within Salmonella enterica Serotypes Derived from Beef Feedlot Cattle: Parsing the Roles of Cattle Source, Pen, Animal, Sample Type, and Production Period.

# publications[].label
Whole-Genome Sequences of Salmonella enterica Serovar I 4,[5],12:i:- Isolates from Swine.

# publications[].label
Effects of Zinc and Menthol-Based Diets on Co-Selection of Antibiotic Resistance among E. coli and Enterococcus spp. in Beef Cattle.

# publications[].label
Genomic Profiling of Antimicrobial Resistance Genes in Clinical Salmonella Isolates from Cattle in the Texas Panhandle, USA

# publications[].label
Comparison of the Prevalence and Genotypic Characteristics of Clostridium difficile in a Closed and Integrated Human and Swine Population in Texas

# publications[].label
Effects of a Direct-Fed Microbial and Feedlot Pen Environmental Change on Phenotypic Resistance among Enterococci Isolated from Beef Cattle Feces

# publications[].label
Clostridium difficile in retail meat and processing plants in Texas.

# publications[].label
Transferability of antimicrobial resistance from multidrug-resistant Escherichia coli isolated from cattle in the USA to E. coli and Salmonella Newport recipients.

# publications[].label
Comprehensive phenotypic and genotypic characterization and comparison of virulence, biofilm, and antimicrobial resistance in urinary Escherichia coli isolated from canines

# publications[].label
Population Dynamics of Salmonella enterica within Beef Cattle Cohorts Followed from Single-Dose Metaphylactic Antibiotic Treatment until Slaughter.

# publications[].label
Two-Dose Ceftiofur Treatment Increases Cephamycinase Gene Quantities and Fecal Microbiome Diversity in Dairy Cows Diagnosed with Metritis.

# publications[].label
Comparison of whole genome sequences from human and non-human Escherichia coli O26 strains.

# publications[].label
Long-Term Effects of Single-Dose Cephalosporin or Macrolide Use on the Prevalence of AmpC and Extended-Spectrum -Lactamase Producing Escherichia coli in the Feces of Beef Cattle.

# publications[].label
Prevalence and Characterization of Salmonella during Pork Sausage Manufacturing.

# publications[].label
Survey of Clostridium difficile in retail seafood in College Station, Texas.

# publications[].label
Whole-Genome Sequence of Aeromonas hydrophila CVM861 Isolated from Diarrhetic Neonatal Swine.

# publications[].label
Whole-Genome Sequence of Aeromonas spp. Isolated from a Dairy Farm in Central Texas

# publications[].label
Prevalence and genotypic characteristics of Clostridium difficile in a closed and integrated human and swine population.

# publications[].label
Prevalence and Antimicrobial Resistance of Nontyphoidal Salmonella enterica from Head Meat and Trim for Ground Product at Pork Processing Facilities.

# publications[].label
Prevalence and Profiles of Antibiotic Resistance Genes mph(A) and qnrB in Extended-Spectrum Beta-Lactamase (ESBL)-Producing Escherichia coli Isolated from Dairy Calf Feces.

# publications[].label
Effects of two-dose ceftiofur treatment for metritis on the temporal dynamics of antimicrobial resistance among fecal Escherichia coli in Holstein-Friesian dairy cows.

# publications[].label
Can the use of older-generation beta-lactam antibiotics in livestock production over-select for beta-lactamases of greatest consequence for human medicine? An in vitro experimental model.

# researcherOn[].label
Assessing and Mitigating Risk Associated with Antimicrobial Resistance Determinants in Cattle Feedyard Dust

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].awardedBy.preferredLabel
USDA-National Institute of Food And Agriculture

# researcherOn[].label
Antibiotic Use, Resistance, and Stewardship in Veterinary Practice for Domain 8

# researcherOn[].awardedBy.label
Centers for Disease Control and Prevention - (Atlanta, Georgia, United States)

# researcherOn[].awardedBy.preferredLabel
DHHS-Centers For Disease Control and Prevention

# streetAddress
Texas A&M University; Veterinary Integrative Biosciences; 4458 TAMU

# organizations[]
College of Veterinary Medicine and Biomedical Sciences

# organizations[]
School of Veterinary Medicine and Biomedical Sciences

# schools[]
College of Veterinary Medicine and Biomedical Sciences

# schools[]
School of Veterinary Medicine and Biomedical Sciences