Evaluation of a new chromogenic medium, MRSA select, for detection of methicillin-resistant Staphylococcus aureus.
We compared MRSA Select to mannitol-salt agar with 8 microg/ml cefoxitin for the detection of methicillin-resistant Staphylococcus aureus (MRSA) from 6,199 clinical samples submitted for MRSA screening. The sensitivities and specificities of MRSA Select and mannitol-salt agar with cefoxitin were 98% and 92% versus 90% and 78%, respectively (P<0.0001). Most (96%) MRSA were detected after overnight incubation using MRSA Select.
Louie
Lisa
L
Department of Microbiology, Sunnybrook Health Sciences Centre, B121-2075 Bayview Ave., and University of Toronto, Ontario, Canada M4N 3M5. lisa.louie@sunnybrook.ca
Soares
Deirdre
D
Meaney
Helen
H
Vearncombe
Mary
M
Simor
Andrew E
AE
D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001431:Bacteriological Techniques; D002440:Cefoxitin / Q000494:pharmacology; D003470:Culture Media; D006801:Humans; D016106:Methicillin Resistance; D012680:Sensitivity and Specificity; D013203:Staphylococcal Infections / Q000175:diagnosis / Q000382:microbiology*; D013211:Staphylococcus aureus / Q000187:drug effects / Q000302:isolation & purification* / Q000502:physiology
D000900:Anti-Bacterial Agents; D003470:Culture Media; D002440:Cefoxitin