TABLE 3.

Distribution of MICs for other Enterococcus spp. (n = 87) comprising Enterococcus hirae (n = 25), Enterococcus durans (n = 61), and Enterococcus gallinarum (n = 1) isolated from Australian meat chickens^a

Antimicrobial	% of isolates with MIC (mg/liter)													% non-wild type (95% CI)	Clinically resistant (%)
	0.25	0.5	1	2	4	8	16	32	64	128	256	512	1,024
Ampicillin	31	6.9	17.2	16.1	19.5 |	8	0	1.1	0	0	0	0	0	9.2 (4.1–17.3)	1.1
Chloramphenicol*	0	0	0	1.1	6.9	69	23	0	0	0	0	0	0	0.0 (0.0–4.2)	0
Daptomycin	10.3	9.2	11.5	24.1	32.2 |	12.6	0	0	0	0	0	0	0	12.6 (6.5–21.5)
Erythromycin	35.6	6.9	13.8	9.2 |	0	0	34.5	0	0	0	0	0	0	34.5 (24.6–45.4)	34.5
Gentamicin*	0	0	0	0	0	0	0	0	0	100	0	0	0		0
Kanamycin*	0	0	0	0	0	0	0	0	0	83.9	13.8	2.3	0		0
Lincomycin*	0	0	9.2	1.1	0	0	89.7	0	0	0	0	0	0
Linezolid	0	1.1	0	59.8	39.1 |	0	0	0	0	0	0	0	0	0.0 (0.0–4.2)	0
Penicillin (benzyl)	17.2	11.5	5.7	20.7	32.2	6.9	1.1 |	4.6	0	0	0	0	0	4.6 (1.3–11.4)	5.7
Quinupristin-dalfopristin*	0	8	4.6	24.1	11.5	20.7	26.4	4.6	0	0	0	0	0		63.2
Teicoplanin	95.4	3.4	1.1	0 |	0	0	0	0	0	0	0	0	0	0.0 (0.0–4.2)	0
Tetracycline	0	0	54	0	1.1 |	0	3.4	3.4	37.9	0	0	0	0	44.8 (34.1–55.9)	44.8
Vancomycin	5.7	46	36.8	8	3.4 |	0	0	0	0	0	0	0	0	0.0 (0.0–4.2)	0
Virginiamycin*	36.8	8	14.9	11.5	8	6.9	6.9	6.9	0	0	0	0	0

^aThe percentages of isolates classified as microbiologically resistant with corresponding 95% CI and the percentages classified as clinically resistant are shown. For each drug, vertical bars show the positions of the microbiological breakpoints, and shaded areas indicate the ranges of the dilutions evaluated. Microbiological breakpoints are not presently available for antimicrobials noted by an asterisk (*), and blank boxes in the table also indicate the lack of relevant breakpoints. E. hirae breakpoints were used for this table. Note that Enterococcus spp. are intrinsically resistant to lincomycin.