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 |
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| Authors: | Stoakes Luba Reyes Romina Daniel Janis Lennox Gwen John Michael A Lannigan Robert Hussain Zafar |
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| Affiliation: | 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. zafar.hussain@lhsc.on.ca. |
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| Abstract: | 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. |
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