TABLE 2.

Activities of various drugs against enterococci in this studya

Organism (no. of strains) and drugMIC (mg/liter)bRate of resistance (I+R)
Range50%90%No.%
E. faecalis (97)
    Ampicillin0.5-21200
    Imipenem0.5-8481718
    Vancomycin1-21200
    Gentamicin1->512412811
    Moxifloxacin0.125-168165860
E. faecium (60)
    Ampicillin0.5-1616164067
    Imipenem1->8883558
    Vancomycin0.5-20.5100
    Gentamicin1-164800
    Moxifloxacin0.5-16485287
E. durans (12)
    Ampicillin1-22200
    Imipenem11100
    Vancomycin11100
    Gentamicin2->5125125121083
    Moxifloxacin>44412100
  • a Activities of a β-lactam (ampicillin), a carbapenem (imipenem), a glycopeptide (vancomycin), an aminoglycoside (gentamicin), and a new methoxyquinolone (moxifloxacin) against E. faecalis, E. faecium, and E. durans group strains.

  • b 50% and 90%, MICs at which 50 and 90% of isolates are inhibited, respectively.