TABLE 2.

Comparison of the activity of RFB against clinical isolates from CF and non-CF patients^a

Species and strain	Morphotype	Source	RFB MIC (μg/ml)
M. abscessus
CIP104536	S	Non-CF	50
3321	S	Non-CF	50
1298	S	CF	50
2587	S	CF	100
2069	S	Non-CF	100
CF	S	CF	25
2524	R	CF	25
2648	R	CF	25
3022	R	Non-CF	50
5175	R	CF	25
CIP104536	R	Non-CF	25
M. massiliense
CIP108297	R	Addison's disease	50
210	R	CF	100
179	R	CF	100
CIP108297	S	Addison's disease	100
140	S	CF	50
185	S	CF	100
107	S	CF	50
122	S	CF	100
120	S	CF	6.25
212	S	CF	100
100	S	CF	100
111	S	CF	100
M. bolletii
CIP108541	S	None reported	100
114	S	CF	100
17	S	CF	50
116	S	CF	100
97	S	CF	100
112	R	CF	100
19	R	Non-CF	50
10	R	None reported	100
108	R	CF	25

^aThe MIC (μg/ml) was determined in cation-adjusted Mueller-Hinton broth for different subspecies belonging to the M. abscessus complex. Results are from 3 independent experiments. RFB, rifabutin