Table 1.

Susceptibilities of 60 clinical isolates of S. bovis to various antimicrobial agents

Antimicrobial agentMIC (μg/ml)% Resistant
Range50%90%
Penicillin≤0.03–0.120.060.120
Imipenem≤0.03–≤0.03≤0.03≤0.030
Cefotaxime≤0.03–0.5≤0.030.250
Erythromycin0.03–>512>512>51263.3
Clarithromycin≤0.03–>51225651263.3
Clindamycin0.03–2560.0625628.3,a35b
Quinupristin-dalfopristin1–1648NAc
Tetracycline0.5–64646475
Chloramphenicol1–2220
Gentamicin1–3224NA 
Ciprofloxacin1–424NA 
Vancomycin0.250.250.250
Teicoplanin0.06–0.50.250.50
  • a For cMLS isolates.

  • b For iMLS isolates.

  • c NA, no interpretive NCCLS breakpoints are available.