Abstract

Antibiotic resistance is a global concern in public health. Antibiotic-resistant clones can spread nationally, internationally, and globally. This review considers representative antibiotic-resistant Gram-negative bacterial clones–CTX-M- 15-producing ST131 in Escherichia coli, extended-spectrum β-lactamase-producing ST11 and KPC-producing ST258 in Klebsiella pneumoniae, IMP-6-producing, carbapenem-resistant ST235 in Pseudomonas aeruginosa, and OXA-23- producing global clone 2 in Acinetobacter baumannii–that have disseminated worldwide, including in Korea. The findings highlight the urgency for systematic monitoring and international cooperation to suppress the emergence and propagation of antibiotic resistance.

• Keywords: Escherichia coli; Klebsiella pneumoniae; Pseudomonas aeruginosa; Acinetobacter baumannii