Susceptibilities to antibiotics of 5 clinical strains isolated from endocarditis and 2 reference strains of Enterococcus faecalis in conditions of standard and high inoculum (MICs expressed in µg/ml).

aMICs expressed in micrograms per milliliter and determined by E-tests on Mueller-Hinton Agar, supplemented with Calcium (50 mg/l) innoculated with standard inoculum (105 to 106 CFU/ml) and high inoculum (108 to 109 CFU/ml).bS, sensitive; R, resistant. S ans R breakpoints are determined with EUCAST 2011 breakpoints.c7 strains of Enterococcus faecalis: 5 clinical strains obtained from patients presenting endocarditis (OB, FAM, ME, LH, FG) and 2 referral strains (JH2-2, ATCC 11700).