Biofilm Formation by Methicillin-Resistant and Methicillin-Sensitive Staphylococcus aureus Strains from Hospitalized Patients in Poland

Table 2

Ability of S. aureus strains to produce biofilm on polystyrene.

Origin of strains (no.)	No. (%) of strains
	Specific biofilm formation
	Strong	Moderate	Weak
Bronchoalveolar washings (32)	14 (43.8)	15 (46.8)	3 (9.4)
Wound (25)	7 (28)	12 (48)	6 (24)
Anus (16)	2 (12.5)	9 (56.2)	4 (25)
Blood (13)	5 (38.5)	7 (53.8)	1 (7.7)
Nose (8)	4 (50)	4 (50)	-
Purulence (6)	2 (33.4)	4 (66.6)	-
Urine (5)	1(20)	4 (80)	-
Throat (9)	4 (44.4)	5 (55.6)	-
Sputum (3)	2 (66.7)	1 (33.3)	-
Tracheostomy tube (3)	2 (66.7)	1 (33.3)	-
Catheter (2)	1(50)	-	1 (50)
Other (8)	4 (50)	2 (25)	2 (25)
Total	48 (36.9)	64 (49.2)	17 (13.1)

- One strain did not form biofilm.