Table 2. Virulence genes identified in the Shiga toxin-producing Escherichia coli O26 strains subjected to whole genome sequencing, Romania, 2016.

Strain identification number	Virulence genes
	cba	cif	eae	efa1	ehxA	epeA	espA	espB	espF	espJ	espP	gad	iha	iss	katP	lpfA	nleA	nleB	nleC	stx1a	stx2a	tir	toxB
1	–	+	+	+	+	–	+	+	+	+	+	+	+	+	+	+	+	+	+	–	+	+	+
2	–	+	+	+	+	–	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
3	–	+	+	+	+	–	+	+	+	+	+	+	+	+	+	+	+	+	+	+	–	+	+
4	–	+	+	+	–	–	+	+	+	+	–	+	+	+	–	+	+	+	+	+	+	+	–
5	+	+	+	+	+	–	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
6	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+

+: present; –: absent.