Table 1.

MIC ranges of antibiotics against susceptible L. monocytogenes

Antimicrobial agentMIC range (mg/liter)
Ampicillin<0.06–1
Penicillin G0.125–1
Cefazoline<1–8
Ceftriaxone<4–32
Gentamicin<1–2
Erythromycin<0.125–0.25
Clarithromycin<0.5–1
Clindamycin<0.25–2
Linezolid1–4
Quinupristin-dalfopristin0.25–2
Levofloxacin0.5–2
Gatifloxacin<0.5–4
Rifampin<0.25–0.5
Co-trimoxazole<0.25
Tetracycline<1–2
Vancomycin<0.5–2