Table 1. Antibiotic resistance profiles of the isolated organisms from air samples, environmental swabs, in addition to clinical isolates.

Antimicrobial		Escherichia spp.	Klebsiella spp.	Enterobacter spp.	Citrobacter spp.	Other E*	Pseudomonas spp.
Number of isolates		91	90	16	18	11	21
		Resistance %
Ceftazidime	N	40	36	7	6	7	NT
	%	44	40	43.8	33.3	64
Ciprofloxacin	N	18	13	1	0	3	0
	%	19.8	14.4	6.3	0	27.3	0
Chloramphenicol	N	43	37	4	6	5	NT
	%	47.3	41.1	25	33.3	45.5
Piperacillin	N	91	90	15	18	10	21
	%	100	100	93.8	100	91	100
Tetracycline	N	61	56	9	9	6	NT
	%	67	62.2	56.3	50	54.5
Ampicillin	N	91	90	16	18	11	NT
	%	100	100	100	100	100
Amoxicillin	N	91	90	16	18	11	NT
	%	100	100	100	100	100
Trimethoprim/Sulfamethoxazole	N	84	81	14	13	8	NT
	%	92.3	90	87.5	72.2	72.7
Aztreonam	N	91	90	16	18	11	21
	%	100	100	100	100	100	100
Cefuroxime	N	85	89	16	18	11	NT
	%	93.4	98.9	100	100	100
Gentamicin	N	0	2	0	0	0	0
	%	0	2.2	0	0	0	0
Amikacin	N	1	2	0	0	0	0
	%	1.1	2.2	0	0	0	0
Ceftriaxone	N	NT	NT	NT	NT	NT	10
	%						47.6
Imipenem	N	7	7	0	4	2	0
	%	7.7	7.8	0	22.2	18.1	0
Ertapenem	N	1	5	0	1	1	NT
	%	1.1	5.6	0	5.6	1.1
Meropenem	N	1	1	0	0	0	0
	%	1.09	1.1	0	0	0	0
		MAR index and MDR %
MAR index		0.6	0.5	0.5	0.5	0.6	0.2
MDR %		100%	100%	100%	100%	100%	47.6%

E* – Enterobacteriaceae, MAR – multiple antibiotic resistance; MDR – multidrug resistant; NT – not tested.