TABLE 5.

Susceptibility results for 47 gram-positive isolates according to the NCCLS criteria

Antimicrobic agent (disk content)	No. of isolates with indicated resulta picked from:
	CHROMagar Orientation			Blood agar
	S	I	R	S	I	R
Penicillin G (10 IU)	20	2	25	20	1	26
Ampicillin (10 μg)	39	0	8	39	0	8
Amoxicillin (20 μg) + clavulanic acid (10 μg)	44	0	3	44	0	3
Methicillin (5 μg)	10	0	37	10	0	37
Cefotaxime (30 μg)	10	2	35	10	3	34
Ceftriaxone (30 μg)	10	2	35	10	2	35
Cefuroxime (30 μg)	10	4	33	10	4	33
Cephalothin (30 μg)	14	2	29	14	3	30
Amikacin (30 μg)	12	0	35	12	0	35
Gentamicin (10 μg)	6	0	41	6	0	41
Erythromycin (15 μg)	18	0	29	18	0	29
Vancomycin (30 μg)	45	0	2	45	0	2
Clindamycin (2 μg)	14	0	33	14	0	33
Rifampin (2 μg)	20	2	25	20	2	25
Ofloxacin (10 μg)	14	0	33	14	0	33
Nitrofurantoin (30 μg)	41	0	6	41	0	6
Fusidic acid (10 μg)	13	0	34	13	0	34
Chloramphenicol (30 μg)	26	6	15	26	6	15
Sulfamethoxazole (23.75 μg) + trimethoprim (1.25 μg)	14	0	33	14	0	33

^aS, susceptible; I, intermediate; R, resistant. Paired t test result: P = 0.3306 for intermediate and resistant isolates.