Table 2.

Distribution of genotoxin prevalence according to vendor origin and institutional destination

	Vendor B			Vendor C
	Total	Institution Y	Institution Z	Institution Z	All isolates
Total pks+ E.coli	13/13(100%)	11/11 (100%)	2/2 (100%)	3/3(100%)	45/69 (65%)
Total cdt+ E.coli	9/13 (69%)	7/11 (64%)	2/2 (100%)	3/3 (100%)	20/69 (29%)
Total cnf+ E. coli	4/13 (31%)	4/11 (36%)	0/2 (0%)	0/3 (0%)	4/69 (6%)
pks–/ cdt–/ cnf–	0	0	0	0	24
pks–/ cdt+/cnf–	0	0	0	0	0
pks–/cdt–/cnf+	0	0	0	0	0
pks+/ cdt–/cnf–	0	0	0	0	21
pks+/ cdt+/cnf–	9	7	2	3	20
pks+/ cdt–/cnf+	4	4	0	0	4