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Oxacillin susceptibility testing of Staphylococcus saprophyticus using disk diffusion, agar dilution, broth microdilution, and the Vitek GPS-105 card.

K Ramotar·W Woods·B Toye
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Abstract

Eighty-three mecA negative isolates of S. saprophyticus had oxacillin zone diameters <or= 15 mm or MICs ranging from <or= 0.25-1.0 microg/ml when tested by either agar dilution, broth microdilution, or the Vitek GPS-105 card. Greater than 90% of these isolates would be considered resistant using NCCLS M7-A5, M100-S10 criteria. These results suggest that the current NCCLS MIC and zone diameter breakpoints for oxacillin resistance in coagulase-negative Staphylococci are not appropriate for S. saprophyticus as they do not correlate with the presence of the mecA gene.

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Bacterial ProteinsCulture MediaMicrobial Sensitivity TestsOxacillinPenicillin ResistancePenicillinsStaphylococcusEvaluation StudyJournal Article

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K Ramotar, W Woods, B Toye. 2001. Oxacillin susceptibility testing of Staphylococcus saprophyticus using disk diffusion, agar dilution, broth microdilution, and the Vitek GPS-105 card.. https://doi.org/10.1016/s0732-8893(01)00268-1

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