Rapid Emergence and Clonal Dissemination of CTX-M-15–Producing Salmonella enterica Serotype Virchow, South Korea

Abstract

The prevalence of cefotaxime-resistant Salmonella enterica serotype Virchow has dramatically increased in South Korea since the first isolation in 2011. Of 68 isolates collected over 10 years, 28 cefotaxime-resistant isolates harbored the blaCTX-M-15 extended-spectrum β-lactamase gene and were closely related genetically, demonstrating the clonal dissemination of CTX-M-15–producing Salmonella Virchow in South Korea.

Keywords

• extended-spectrum β-lactamases
• ESBL
• Salmonella enterica
• CTX-M-15
• Salmonella enterica serotype Virchow
• IncHI2