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Research Article | Applied and Environmental Science

A Population-Based Surveillance Study of Shared Genotypes of Escherichia coli Isolates from Retail Meat and Suspected Cases of Urinary Tract Infections

Reina Yamaji, Cindy R. Friedman, Julia Rubin, Joy Suh, Erika Thys, Patrick McDermott, Melody Hung-Fan, Lee W. Riley
Patricia A. Bradford, Editor
Reina Yamaji
aSchool of Public Health, Division of Infectious Diseases and Vaccinology, University of California, Berkeley, California, USA
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Cindy R. Friedman
bEnteric Diseases Epidemiology Branch, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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Julia Rubin
aSchool of Public Health, Division of Infectious Diseases and Vaccinology, University of California, Berkeley, California, USA
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Joy Suh
aSchool of Public Health, Division of Infectious Diseases and Vaccinology, University of California, Berkeley, California, USA
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Erika Thys
aSchool of Public Health, Division of Infectious Diseases and Vaccinology, University of California, Berkeley, California, USA
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Patrick McDermott
cNARMS at U.S. Department of Health & Human Services/FDA, Laurel, Maryland, USA
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Melody Hung-Fan
dPublic Health Laboratory Services, Contra Costa Public Health Lab, Martinez, California, USA
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Lee W. Riley
aSchool of Public Health, Division of Infectious Diseases and Vaccinology, University of California, Berkeley, California, USA
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Patricia A. Bradford
Antimicrobial Development Specialists, LLC
Roles: Editor
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DOI: 10.1128/mSphere.00179-18
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ABSTRACT

There is increasing evidence that retail food may serve as a source of Escherichia coli that causes community-acquired urinary tract infections, but the impact of this source in a community is not known. We conducted a prospective, population-based study in one community to examine the frequency of recovery of uropathogenic E. coli genotypes from retail meat samples. We analyzed E. coli isolates from consecutively collected urine samples of patients suspected to have urinary tract infections (UTIs) at a university-affiliated health service and retail meat samples from the same geographic region. We genotyped all E. coli isolates by multilocus sequence typing (MLST) and tested them for antimicrobial susceptibility. From 2016 to 2017, we cultured 233 E. coli isolates from 230 (21%) of 1,087 urine samples and 177 E. coli isolates from 120 (28%) of 427 retail meat samples. Urine samples contained 61 sequence types (STs), and meat samples had 95 STs; 12 STs (ST10, ST38, ST69, ST80, ST88, ST101, ST117, ST131, ST569, ST906, ST1844, and ST2562) were common to both. Thirty-five (81%) of 43 meat isolates among the 12 STs were from poultry. Among 94 isolates in the 12 STs, 26 (60%) of 43 retail meat isolates and 15 (29%) of 51 human isolates were pan-susceptible (P < 0.005). We found that 21% of E. coli isolates from suspected cases of UTIs belonged to STs found in poultry. Poultry may serve as a possible reservoir of uropathogenic E. coli (UPEC). Additional studies are needed to demonstrate transmission pathways of these UPEC genotypes and their food sources.

IMPORTANCE Community-acquired urinary tract infection caused by Escherichia coli is one of the most common infectious diseases in the United States, affecting approximately seven million women and costing approximately 11.6 billion dollars annually. In addition, antibiotic resistance among E. coli bacteria causing urinary tract infection continues to increase, which greatly complicates treatment. Identifying sources of uropathogenic E. coli and implementing prevention measures are essential. However, the reservoirs of uropathogenic E. coli have not been well defined. This study demonstrated that poultry sold in retail stores may serve as one possible source of uropathogenic E. coli. This finding adds to a growing body of evidence that suggests that urinary tract infection may be a food-borne disease. More research in this area can lead to the development of preventive strategies to control this common and costly infectious disease.

  • Copyright © 2018 Yamaji et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

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A Population-Based Surveillance Study of Shared Genotypes of Escherichia coli Isolates from Retail Meat and Suspected Cases of Urinary Tract Infections
Reina Yamaji, Cindy R. Friedman, Julia Rubin, Joy Suh, Erika Thys, Patrick McDermott, Melody Hung-Fan, Lee W. Riley
mSphere Aug 2018, 3 (4) e00179-18; DOI: 10.1128/mSphere.00179-18

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A Population-Based Surveillance Study of Shared Genotypes of Escherichia coli Isolates from Retail Meat and Suspected Cases of Urinary Tract Infections
Reina Yamaji, Cindy R. Friedman, Julia Rubin, Joy Suh, Erika Thys, Patrick McDermott, Melody Hung-Fan, Lee W. Riley
mSphere Aug 2018, 3 (4) e00179-18; DOI: 10.1128/mSphere.00179-18
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KEYWORDS

Escherichia coli
extraintestinal diseases
molecular epidemiology
multidrug resistance
multilocus sequence typing
urinary tract infection
uropathogenic E. coli

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