Molecular and Microbiological Characteristics of Uropathogenic Escherichia coli Harboring CTX-M-55

Annals of Laboratory Medicine 2026 Open access

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Authors: Heejeong Kwon, Jeoungyeon Kim, Jinnam Kim, Se Yoon Park, Choseok Yoon, Yangsoon Lee, Bongyoung Kim
DOI: 10.3343/alm.2025.0288
Cited by: 0

Abstract

values than CTX-M-15 for ceftazidime (>16 vs. 8 μg/mL), cefepime (32 vs. 1 μg/mL), and piperacillin/tazobactam (0.5 vs. 0.25 μg/mL). Virulence factors and coexisting resistance genes did not significantly differ. Our findings suggest that, given its increased resistance to ceftazidime and cefepime, CTX-M-55 should be considered when treating UTIs in Korea.

Fields of Study & Subjects

Antibiotic Resistance in Bacteria Urinary Tract Infections Management Escherichia coli research studies

Publication details

Journal / source
Annals of Laboratory Medicine
Volume
46
Issue
3
Pages
345–350
Publication date
13 January 2026
Language
EN