Antibiotic Susceptibility Pattern and Biofilm Formation in Clinical Isolates of Enterococcus spp.

Table 3

Relationship between biofilm and presence of esp gene among Enterococcus spp.

Type of biofilm (OD570)	Enterococcus spp.; with esp gene		Enterococcus spp.; without esp gene		Total Enterococcus spp. N (%)
	E. faecalis; N ()	E. faecium; N ()	E. faecalis; N (%)	E. faecium; N (%)
Strong (>2)	3 (13.6)	3 (16.6)	1(1.7)	0 (0)	7 (5.1)
Medium (1 to 2)	2 (9.0)	2 (11.1)	3 (5.2)	1 (2.5)	8 (5.8)
Weak (0.5 to 1)	2 (9.0)	2 (11.1)	3 (5.2)	8 (20)	15 (10.9)
Non-biofilm-formers (≤0.5)	15 (68.1)	11 (61.1)	50 (87.7)	31 (77.5)	107 (78.1)
Total	22 (16.1)	18 (13.1)	57 (41.60)	40 (42.3)	137 (100)