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Journal of Clinical Microbiology, February 2006, p. 637-639, Vol. 44, No. 2
0095-1137/06/$08.00+0     doi:10.1128/JCM.44.2.637-639.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Prospective Comparison of a New Chromogenic Medium, MRSASelect, to CHROMagar MRSA and Mannitol-Salt Medium Supplemented with Oxacillin or Cefoxitin for Detection of Methicillin-Resistant Staphylococcus aureus

Luba Stoakes,1 Romina Reyes,1,2,3 Janis Daniel,1 Gwen Lennox,1 Michael A. John,1,2,3 Robert Lannigan,1,2,3 and Zafar Hussain1,2,3*

Department of Clinical Microbiology and Infection Control, London Health Sciences Centre, London, Ontario, Canada,1 Division of Medical Microbiology and Infectious Diseases, The University of Western Ontario, London, Ontario, Canada,2 Department of Microbiology and Immunology, The University of Western Ontario, London, Ontario, Canada3

Received 3 August 2005/ Returned for modification 3 October 2005/ Accepted 3 December 2005

MRSASelect agar was compared to CHROMagar, mannitol-salt agar with oxacillin, and mannitol-salt agar with cefoxitin (MSA-CFOX) for the isolation of methicillin-resistant Staphylococcus aureus (MRSA). The sensitivities and specificities were 97.3% and 99.8%, 82.9% and 99.1%, 80.2% and 79%, and 99.1% and 84.8%, respectively. MSA-CFOX and MRSASelect had a high sensitivity. MRSASelect, however, was more specific and proved to be a more reliable and rapid medium for the detection of MRSA.

* Corresponding author. Mailing address: Department of Clinical Microbiology and Infection Control, London Health Sciences Centre, Room E3-316, Westminster Tower, 800 Commissioners Road East, London, Ontario N6A 4G5, Canada. Phone: (519) 685-8149. Fax: (519) 685-8203. E-mail: zafar.hussain{at}lhsc.on.ca.

Journal of Clinical Microbiology, February 2006, p. 637-639, Vol. 44, No. 2
0095-1137/06/$08.00+0     doi:10.1128/JCM.44.2.637-639.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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