TABLE 3.

Accumulation of radioactive clarithromycin and azithromycin among H. influenzae isolates with different susceptibility patterns

Drug and susceptibility	Accumulation [(cpm with CCCP/cpm without CCCP) −1]
	Mean	Minimum	Maximum
Clarithromycin
Hypersusceptible	0.04	−0.26	0.39
Baseline	0.88	0.39	3.12
High-level resistant	0.88	0.36	1.64
Azithromycin
Hypersusceptible	0.13	−0.44	0.39
Baseline	1.43	0.38	2.94
High-level resistant	2.48	0.90	6.18