Antibiotic resistance of Clostridium difficile isolates.

The activity of metronidazole, vancomycin, clindamycin and teicoplanin against Clostridium difficile strains isolated from various origins in Poland was investigated. MIC was determined for metronidazole, clindamycin and teicoplanin. The disc-diffusion method was used for the vancomycin susceptibility test. Three out of thirty-eight strains were resistant to vancomycin and twenty-eight were susceptible to teicoplanin. A widespread MIC was observed for clindamycin and metronidazole. No correlation between the origin of the strain, toxigenicity and susceptibility to teicoplanin, clindamycin, vancomycin and metronidazole was evident.