KMID : 1142720210240010011
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Annals of Clinical Microbiology 2021 Volume.24 No. 1 p.11 ~ p.20
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Risk Factors Associated with Recurrent Urinary Tract Infection Caused by Escherichia coli
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Kim Young-Ah
Kang Ea-Wha Seo Young-Hee Lee Kyung-Won
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Abstract
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Background: The purpose of this study was to analyze the clinical and microbiological characteristics of recurrent urinary tract infection (UTI) caused by Escherichia coli? the most common etiological agent.
Methods: Cases of recurrent and single episodes of UTI caused by E. coli were evaluated retrospectively for a period of 6 months (January-June 2019) to analyze the clinical and molecular characteristics of this disease.
Results: Healthcare-associated UTI, E. coli bacteremia, and poor microbial clearance 7 days post infection were associated more with the recurrent episodes of infection. E. coli isolates from subjects with recurrent UTIs showed higher rates of antimicrobial resistance and extended-spectrum ¥â-lactamase (ESBL) production. The E. coli clone? sequence type 131 was detected in similar proportions in isolates, recovered from subjects in both groups? recurrent episodes and single episode of UTI.
Conclusion: The control of antimicrobial-resistant ESBL-producing E. coli strains may be difficult using antimicrobial therapy and subsequently delay the clearance of the etiologic agent. This could play a major role in the development of recurrent UTIs.
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KEYWORD
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Escherichia coli, Extended-spectrum ¥â-lactamases, Recurrent urinary tract infection, Risk factors, Sequence type 131
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