Wide spread and diversity of mutation in the gyrA gene of quinolone-resistant Corynebacterium striatum strains isolated from three tertiary hospitals in China

Table 2 Antibiotics susceptibility profiles of 410 C. striatum strains

Antibiotics	MIC (μg/ml)			Percentage of resistant isolates, % (n/410)
Antibiotics	MIC₅₀	MIC₉₀	Range	Percentage of resistant isolates, % (n/410)
Penicillin	≥ 8	> 64	≤ 1, ≥ 4	100 (410/410)
Cefepime	≥ 8	> 64	≤ 1, ≥ 4	100 (410/410)
Imipenem	≥ 32	> 64	≤ 4, ≥ 16	90.7 (372/410)
Ciprofloxacin	≥ 32	64	≤ 1, ≥ 4	100.0 (410/410)
Moxifloxacin	8	16	≤ 0.5, > 0.5	100.0 (410/410)^a
Erythromycin	32	64	≤ 0.5, ≥ 2	98.8 (405/410)
Clindamycin	16	> 32	≤ 0.5, ≥ 4	98.5 (404/410)
Tetracycline	≥ 32	> 64	≤ 4, ≥ 16	70.5 (289/410)
Gentamycin	8	≥ 32	≤ 4, ≥ 16	53.2 (218/410)
Sulfamethoxazole and trimethoprim	≥ 8/152	≥ 8/152	≤ 2/38, ≥ 4/76	98.0 (402/410)
Linezolid	< 0.5	< 0.5	≤ 2	0 (0.0)
Daptomycin	< 0.5	< 0.5	≤ 1	0 (0.0)
Vancomycin	< 0.5	< 0.5	≤ 2	0 (0.0)

ISSN: 1476-0711