TABLE 2.

Percentages of strains of L. monocytogenes and coryneform bacteria inhibited at the indicated concentrations of ABT-773, erythromycin, and clindamycin

Bacterium (no. of isolates)	Antimicrobial agent	% of strains inhibited at concn (μg/ml):
		≤0.015	0.03	0.06	0.125	0.25	0.5	1	2	4	8	16	32	64	>64
C. amycolatum (40)	ABT-773	30.0	35.0	45.0	75.0	85.0	92.5	95.0	100
	Erythromycin			15.0						30.0	35.5	55.0	80.0	87.5	100
	Clindamycin					10	15.0							17.5	100
C. jeikeium (40)	ABT-773	7.5	12.5	30	42.5	45.0	47.5	60.0	62.5		65.0			100
	Erythromycin			2.5					5.0	7.5			15.0	20.0	100
	Clindamycin					2.5									100
C. minutissimum (14)	ABT-773	42.9						57.2					64.3	100
	Erythromycin			28.6		35.7		42.9					50.0	57.2	100
	Clindamycin			7.2	14.3			28.6	42.9						100
C. pseudodiphtheriticum (12)	ABT-773	33.3											41.7	100
	Erythromycin			16.7		25.0									100
	Clindamycin		8.3		25.0										100
C. striatum (40)	ABT-773	27.5	30	47.5	57.5	60.0	62.5							100
	Erythromycin			20					25.0	47.5	55.0	60.0		62.5	100
	Clindamycin						2.5	12.5	20.0						100
C. urealyticum (40)	ABT-773	5.0					7.5	10.0						100
	Erythromycin			50											100
	Clindamycin				5.0										100
L. monocytogenes (15)	ABT-773	100
	Erythromycin				6.7	73.3	100
	Clindamycin						6.7	40.0	100
R. equi (10)	ABT-773	40.0	60.0	70.0		80.0	90.0			100
	Erythromycin			20.0		30.0	60.0		70.0						100
	Clindamycin				20.0		30.0	40.0		70.0					100