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Proposed disk diffusion susceptibility criteria for ofloxacin.

Authors
  • P C Fuchs
  • A L Barry
  • R N Jones
  • C Thornsberry
Publication Date
Aug 01, 1985
Source
PMC
Keywords
License
Unknown

Abstract

Disk diffusion zone diameter breakpoint criteria for ofloxacin were tentatively established by correlating MICs with 1-, 3-, and 5-micrograms disk inhibitory zone diameters for 638 bacterial isolates representing 36 species. We recommend use of 5-micrograms disks with the following breakpoints: susceptible (MIC, less than or equal to 2.0 micrograms/ml), greater than or equal to 16 mm; intermediate (MIC, 4.0 micrograms/ml), 13 to 15 mm; and resistant (MIC, greater than or equal to 8.0 micrograms/ml), less than or equal to 12 mm.

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