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Failure of Micro Media FOX Microdilution System to detect decreased susceptibility of Streptococcus pneumoniae to
1Department of Pathology, University of Utah Medical Center, Salt Lake City 84132.
Journal of Clinical Microbiology
|November 1, 1991
Abstract:
Twelve isolates of Streptococcus pneumoniae with decreased susceptibility by oxacillin screen were susceptible by the FOX panel (Micro Media Systems, Cleveland, Ohio), a commercial microdilution system designed for fastidious organisms. These organisms were found to be moderately susceptible or resistant by broth macrodilution and agar dilution methods. This discrepancy indicates that the FOX panel is not reliable for susceptibility testing of S. pneumoniae.