Table 3.

Genetic features of E. coli 5301 pathogenic isolate (B2) compared with E. coli 5281 commensal isolate (A), from effluent (BEI-EFL10TM2) and influent (FNw-AFB7GM) wastewater.

Isolates	Resistance Genes		Plasmids	Virulence Genes
	β-Lactamases	Others Genes	Replicon	Offensive Factors	Iron Uptake	Fimbrial Types
5301	CTX-M-15; OXA-1; EC5	dfrA17; aadA5; qacEdelta1; sul1; aac(3)-IIa; catB3; aac(6’)-Ib-cr5;	FIA; FIB; FII; I1-I	CNF1; Iss; Hra1; Colicin Ia; Usp; senB	Enterobactin; Aerobactin; Yersinobactin; ChuA; sitA	CFA/1 (clade α); Type1(clade γ1); Yad (clade γ4); Yeh (clade γ4); Ybg (clade π); Yfc (clade π); P (clade π); Type IV
5281	CTX-M-15; TEM-1	dfrA1; sat2; aadA1	HI1A; HI1B; R		Enterobactin; Aerobactin	CFA/1 (clade α); Type1(clade γ1); Sfm (clade γ1); Type IV

Legend: CNF1-cytotoxic necrotizing factor; Iss-increased serum survival lipoprotein; hra-heat-resistant agglutinin; USP-uropathogenic specific protein; senB-enterotoxin.