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Journal of Clinical Microbiology, August 2009, p. 2623-2625, Vol. 47, No. 8
0095-1137/09/$08.00+0     doi:10.1128/JCM.02112-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Performance of MicroScan WalkAway and Vitek 2 for Detection of Oxacillin Resistance in a Set of Methicillin-Resistant Staphylococcus aureus Isolates with Diverse Genetic Backgrounds {triangledown}

Martin Kaase,* Barbara Baars, Susanne Friedrich, Florian Szabados, and S. G. Gatermann

Department of Medical Microbiology, Ruhr University Bochum, Bochum, Germany

Received 4 November 2008/ Returned for modification 19 December 2008/ Accepted 29 May 2009

Of 104 genotypically diverse methicillin-resistant Staphylococcus aureus (MRSA) isolates tested with the MicroScan WalkAway (Pos MIC 24 panel) and Vitek 2 (AST-P549 card) systems, 7 and 6 isolates, respectively, showed an oxacillin MIC of ≤2mg/liter. Most of these MRSA isolates were community acquired. However, if the cefoxitin screen of AST-P549 was also considered, MRSA detection failed for only one isolate.


* Corresponding author. Mailing address: Department of Medical Microbiology, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany. Phone: 49 234 32 26938. Fax: 49 234 32 14197. E-mail: martin.kaase{at}rub.de

{triangledown} Published ahead of print on 10 June 2009.


Journal of Clinical Microbiology, August 2009, p. 2623-2625, Vol. 47, No. 8
0095-1137/09/$08.00+0     doi:10.1128/JCM.02112-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.