Table 3 MIC values of antibiotics for Clostridium difficile isolates by E-test

Antibiotics MIC breakpoints (µg/mL) MIC values of C. difficile isolates (µg/mL)
S I R MB025 ED046
Metronidazole1) >8 16 >256 0.125 >256
Moxifloxacin1) >2 4 >8 0.75 0.38
Tetracycline1) >4 8 >16 48 0.047
Clindamycin1) >2 4 >8 0.6 0.19
Vancomycin2) >2 - >2 >256 4
1) The breakpoints defined by Clinical and Laboratory Standards Institute (CLSI).
2) The breakpoints defined by European Committee for Antimicrobial Susceptibility Testing (EUCAST).
MIC, minimum inhibition concentration; S, susceptible; I, intermediate; R, resistant.