Detection of Salmonella enterica Isolates Producing CTX-M Cephalosporinase in U.S. Livestock Populations

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

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 bla(CTX-M-15) extended-spectrum β-lactamase gene and were closely related genetically, demonstrating the clonal dissemination of CTX-M-15-producing Salmonella...

CTX-M-14 type beta-lactamase producing Salmonella enterica serovar enteritidis isolated from imported chicken meat.

First report of CTX-M-14 producing clinical isolates of Salmonella serovar Typhimurium from Egypt.

Salmonella serovar Typhimurium is a leading cause of food-borne diseases worldwide. Its ability to acquire new antibiotic resistance mechanisms is of increasing therapeutic concern [1]. CTX-M betalactamases are the most common extended spectrum β-lactamases (ESBLs) worldwide [2]. The first report of CTX-M detection in Salmonella was in a Tunisian outbreak caused by Salmonella enterica serovar W...

Salmonella enterica Serovar Typhi with CTX-M β-Lactamase, Germany

Fabrizio F. Abrescia, Alessandra Falda, Giacomo Caramaschi, Alfredo Scalzini, Federico Gobbi, Andrea Angheben, Maria Gobbo, Renzo Schiavon, Pierangelo Rovere, and Zeno Bisoffi Author affiliations: Sacro Cuore Hospital, Verona, Italy (F.F. Abrescia, F. Gobbi, A. Angheben, M. Gobbo, Z. Bisoffi); C. Poma Hospital, Mantova, Italy (A. Falda, G. Caramaschi, A. Scalzini); and Mater Salutis Hospital, L...

Molecular epidemiology of CTX-M-producing Escherichia coli in the Calgary Health Region: emergence of CTX-M-15-producing isolates.

A study was designed to describe the molecular epidemiology of CTX-M-producing Escherichia coli over a 6-year period (2000 to 2005) in a large well-defined Canadian region with a centralized laboratory system. Molecular characterization was done by isoelectric focusing, PCR, and automated sequencing, while genetic relatedness was determined by pulsed-field gel electrophoresis with XbaI. Of the ...