INTRODUCTION The aim of this study was to detect the prevalence of the extended-
spectrum beta-lactamase (ESBL)-encoding CTX-M gene in Escherichia coli isolates …

Background A common mechanism of resistance to beta-lactam antibiotics is the production
of beta-lactamase by Gram-negative bacteria. Recently, nonderivative extended-spectrum …

Abstract Background: Organisms producing CTX-M-β-lactamase are emerging around the
world as a source of resistance to oxyimino-cephalosporins such as cefotaxime. In this …

The aim of this study was evaluate the spread of CTX-M-type extended-spectrum β-
lactamase variants in microorganisms involved in both hospital-and community-acquired …

CTX-M-type extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae
have been previously reported in Venezuela. We assessed the frequency and diversity of …

Background: Organisms producing CTX-M-lactamases are known as the source of
resistance to Oxyiminocephalosporins such as Eeftriaxone and Ceftazidime. However, the …

In the present study, we investigated the prevalence of CTX-M-type beta-lactamase in
extended spectrum beta-lactamase (ESBL)-producing Escherichia coli isolated in our …

This study was conducted in Iran in order to assess the distribution of CTX-M type ESBLs
producing Enterobacteriaceae. From January 2012 to December 2013, totally 198 E. coli …

Background: The emerge of extended-spectrum β-lactamases (ESBLs)-producing
Escherichia coli caused problems in antibiotic treatments. The more than 50 variants of CTX …

The spread of ESBL-producing Escherichia coli has constantly increased in both clinical and
community infections. Actually, the main ESBL reported is the CTX-M family, which is widely …