Table 1.

Results of in vitro selection of linezolid-resistant enterococci

StrainMIC (μg/ml)a for strain at pass:Antibiotic-free MIC (μg/ml)b
123456789101112
E. faecalis
 F11812816161616321616323232
 F1771122244163232646464
 F217128163232326464128128128128
 F3171124161616323232323216
 ATCC 2921211281632326464128128128128
E. gallinarum
 Z3931122488888888
E. faecium
 EF2081122222444888
 EF13471122444448888
 EF14011112222222222
 EF15091122222222222
 EF16441112222248161616
  • a MIC by broth dilution.

  • b MIC by agar dilution following one month of growth on antibiotic-free media.