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Volume 13, Number 3—March 2007
Dispatch

Clostridium difficile in Retail Ground Meat, Canada

Alexander Rodriguez-Palacios*Comments to Author , Henry R. Staempfli*, Todd Duffield*, and J. Scott Weese*
Author affiliations: *University of Guelph, Guelph, Ontario, Canada;

Main Article

Table 2

Drug resistance characteristics of 12 meat-derived Clostridium difficile isolates determined by E-test on Muller-Hinton agar after 48 h of incubation*

Antimicrobial drugMIC50, μg/mLMIC90, μg/mLRange, μg/mL% Resistant isolates
Vancomycin0.50.750.5 to 1.00
Metronidazole0.380.50.19 to 1.00
Levofloxacin32324 to >32100
Clindamycin16.024.08 to >256100

*Breakpoints used were vancomycin susceptible, <4.0 μg/mL; vancomycin resistant >32.0 μg/mL; metronidazole susceptible, <8.0 μg/mL; metronidazole resistant, >32.0 μg/mL; clindamycin susceptible, <2.0 μg/mL; clindamycin resistant >8.0 μg/mL; levofloxacin susceptible, <2.0 μg/mL; levofloxacin resistant, >8.0 μg/mL.

Main Article

Page created: June 29, 2010
Page updated: June 29, 2010
Page reviewed: June 29, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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