Comparison of the Vitek 2, MicroScan, and Etest Methods with the Agar Dilution Method in Assessing Colistin Susceptibility of Bloodstream Isolates of Acinetobacter Species from a Korean University Hospital

Seung Yeob Lee; Jong Hee Shin; Kyungwon Lee; Min Young Joo; Kyung Hwa Park; Myung Geun Shin; Soon Pal Suh; Dong Wook Ryang; Soo Hyun Kim

doi:10.1128/JCM.00427-13

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Comparison of the Vitek 2, MicroScan, and Etest Methods with the Agar Dilution Method in Assessing Colistin Susceptibility of Bloodstream Isolates of Acinetobacter Species from a Korean University Hospital

Authors: Seung Yeob Lee ; Jong Hee Shin ; Kyungwon Lee ; Min Young Joo ; Kyung Hwa Park ; Myung Geun Shin ; Soon Pal Suh ; Dong Wook Ryang ; Soo Hyun Kim

Citation: JOURNAL OF CLINICAL MICROBIOLOGY, Vol.51(6) : 1924-1926, 2013

Journal Title: JOURNAL OF CLINICAL MICROBIOLOGY

ISSN: 0095-1137

Issue Date: 2013

MeSH: Acinetobacter Infections/microbiology* ; Acinetobacter baumannii/drug effects* ; Acinetobacter baumannii/isolation & purification ; Anti-Bacterial Agents/pharmacology* ; Bacteremia/microbiology* ; Colistin/pharmacology* ; Hospitals, University ; Humans ; Microbial Sensitivity Tests/methods ; Republic of Korea

Keywords: Acinetobacter Infections/microbiology* ; Acinetobacter baumannii/drug effects* ; Acinetobacter baumannii/isolation & purification ; Anti-Bacterial Agents/pharmacology* ; Bacteremia/microbiology* ; Colistin/pharmacology* ; Hospitals, University ; Humans ; Microbial Sensitivity Tests/methods ; Republic of Korea

Abstract: We evaluated three commercial colistin susceptibility testing methods using 213 bloodstream Acinetobacter isolates identified by gene sequencing. Compared to the agar dilution reference method, excellent categorical agreements (both 99.1%) were observed using Vitek 2 and Etest, compared to 87.3% (95.7% for Acinetobacter baumannii and 80.7% for non-baumannii Acinetobacter isolates) using MicroScan.