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Performance of the β LACTA™ test for rapid detection of expanded-spectrum cephalosporin-non-susceptible Enterobacteriaceae.

Abstract：

OBJECTIVES:The aim of this study was to examine the performance of the chromogenic β LACTA™ test for the rapid detection of expanded-spectrum cephalosporin (ESC) non-susceptibility among Enterobacteriaceae in a region endemic for potent β-lactamases. METHODS:The β LACTA™ test was applied prospectively on 235 consecutive Enterobacteriaceae clinical isolates and 163 previously characterised ESC-non-susceptible Enterobacteriaceae producing a range of β-lactamases. RESULTS:The β LACTA™ test exhibited excellent sensitivity (96.1%) and specificity (98.5%) for the detection of ESC non-susceptibility in the 235 clinical isolates, which harboured mainly extended-spectrum β-lactamase (ESBL) and KPC- and NDM-type enzymes. Among the 163 challenged archived isolates, some false-negative or uninterpretable results were detected, mostly among ESC-non-susceptible isolates with AmpC/VIM/OXA-48-like enzymes. CONCLUSION:β LACTA™ may be effectively applied in regions where ESC non-susceptibility among Enterobacteriaceae is mainly due to ESBL, KPC or NDM β-lactamases.

journal_name

J Glob Antimicrob Resist

journal_title

Journal of global antimicrobial resistance

authors

Vrioni G,Mamali V,Zarkotou O,Voulgari E,Dimitroulia E,Themeli-Digalaki K,Pournaras S,Tsakris A

doi

10.1016/j.jgar.2017.05.018

subject

Has Abstract

pub_date

2017-09-01 00:00:00

pages

285-288

eissn

2213-7165

issn

2213-7173

pii

S2213-7165(17)30105-4

journal_volume

10

pub_type

杂志文章

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