Table 1.

MIC ranges of antibiotics against susceptible L. monocytogenes

Antimicrobial agent	MIC range (mg/liter)
Ampicillin	<0.06–1
Penicillin G	0.125–1
Cefazoline	<1–8
Ceftriaxone	<4–32
Gentamicin	<1–2
Erythromycin	<0.125–0.25
Clarithromycin	<0.5–1
Clindamycin	<0.25–2
Linezolid	1–4
Quinupristin-dalfopristin	0.25–2
Levofloxacin	0.5–2
Gatifloxacin	<0.5–4
Rifampin	<0.25–0.5
Co-trimoxazole	<0.25
Tetracycline	<1–2
Vancomycin	<0.5–2