Susceptibility of Major Pathogens - 1997
Institutional Antibiotic Control Program

Notes
Antibiotic Classes
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	Gram Positive								Gram Negative
												*							*
Total Isolates (1997)1	1286	785	1224	384	1092	225	97	234	110	1453	1116	95	460	274	55	142	857	107	294	44
Amikacin										99	77	99	94	99	100	94	85	3	87
Ampicillin	6	5	99	14	100	100	70	88	67	57	1	2	2	87	2	1
Ampicillin/Sulbactam	52	24							98	60	45	64	17	95	5	5
Aztreonam										98	58	92	56	98	91	77	63	2	18
Cefazolin	52	24			98	99	70	97		89	53	54	3	93	2	0
Cefoxitin										95	76	93	3	100	84	18				93
Ceftazidime										98	58	95	52	98	82	77	71	20	40
Ceftriaxone	52	23					80		100	99	66	93	55	100	96	86	18	0	31
Cefuroxime	52	23							100	95	59	82	31	99	7	0
Chloramphenicol	94	94	76	96	98	99	90	99	100	84	54	86	62	87	67	18	1	57	9	93
Ciprofloxacin	51	44	57	10					100	95	67	94	81	95	85	82	64	26	39
Clindamycin	54	50			91	92	90	91												70
Co-Trimoxazole3	85	50					75		87	78	61	94	77	92	78	86	4	95	40
Erythromycin	37	19			89	75	80	74
Gentamicin	65	45	734	344						93	54	94	79	92	87	85	59	2	44
Imipenem/Cilastatin	52	24	99	24						100	99	100	99	97	85	97	67	2	88
Metronidazole																				100
Nafcillin	52	24
Penicillin	6	5			100	100	70	88												7
Piperacillin																				86
Piperacillin/Tazobactam										94	61	89	65	100	96	92	72	33	69	865
Sulfonamide (urine)										64	60	73	64	89	70	85		100	46
Tetracycline			32	63	75	13	84	7
Ticarcillin/Clavulanate	52	24								87	55	87	47	99	89	79	62	36	43	91
Tobramycin										95	54	95	81	93	87	81	76	2	83
Vancomycin	100	1006	95	24	100	100	100	100

Notes:

1. Percent susceptibility includes duplicate isolates from same patient.
2. Includes both inpatients and outpatients.
3. Co-Trimoxazole is Sulfamethoxazole plus Trimethoprim.
4. Gentamicin synergy.
5. Tested against piperacillln; actual percent susceptible isolates may be higher for piperacillin / tazobactam.
6. Intermediate resistant isolates recovered from one ambulatory patient.

Page created with permission: October 14, 1998

Created: October 14, 1998 Edited: October 3, 2000.
Copyright © 1998-2001.