Molecular Identification of Aminoglycoside-Modifying Enzymes and Plasmid-Mediated Quinolone Resistance Genes among Klebsiella pneumoniae Clinical Isolates Recovered from Egyptian Patients

Table 3

Antibiotic susceptibility of K. pneumoniae clinical isolates.

Antibiotic	K. pneumoniae susceptibility pattern ()			MIC50 and MIC90
	Sensitive	Intermediate	Resistant	MIC50	MIC90
	Number (%)	Number (%)	Number (%)
Cefotaxime	15 (13)	1 (1)	98 (86)	256	>1024
Ceftazidime	26 (23)	14 (12)	74 (65)	32	>1024
Cefoperazone	17 (15)	3 (2)	94 (82)	512	>1024
Cefoperazone/sulbactam	51 (45)	12 (10)	51 (45)	32	1024
Ceftriaxone	18 (16)	—	96 (84)	256	>1024
Cefepime	21 (18)	24 (21)	69 (61)	32	256
Imipenem	86 (75)	5 (4)	23 (20)	≤0.5	4
Meropenem	85 (75)	2 (2)	27 (24)	≤0.5	16
Tetracycline	32 (28)	4 (3)	78 (68)	128	512
Tigecycline	111 (97)	—	3 (3.0)	≤0.5	≤0.5
Gentamicin	46 (40)	12 (11)	56 (49)	8	>1024
Amikacin	84 (74)	1 (1)	29 (25)	≤0.5	>1024
Thiamphenicol	7 (6.0)	2 (2)	105 (92)	1024	>1024
Ciprofloxacin	60 (53)	3 (2)	51 (45)	1	128
Levofloxacin	65 (57)	5 (4)	44 (39)	≤0.5	64