Correlation of cefoxitin MICs with the presence of mecA in Staphylococcus spp.
نویسندگان
چکیده
This report describes the results of an 11-laboratory study to determine if a cefoxitin broth microdilution MIC test could predict the presence of mecA in staphylococci. Using breakpoints of < or = 4 microg/ml for mecA-negative and > or = 6 or 8 microg/ml for mecA-positive isolates, sensitivity and specificity based on mecA or presumed mecA for Staphylococcus aureus at 18 h of incubation were 99.7 to 100% in three cation-adjusted Mueller-Hinton broths tested. For coagulase-negative strains at 24 h of incubation, breakpoints of < or = 2 microg/ml for mecA-negative and > or = 4 microg/ml for mecA-positive isolates gave sensitivity and specificity of 94 to 99% and 69 to 80%, respectively.
منابع مشابه
Identification and characterization of methicillin-resistant coagulase-negative staphylococci from bovine mastitis.
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ورودعنوان ژورنال:
- Journal of clinical microbiology
دوره 47 6 شماره
صفحات -
تاریخ انتشار 2009