Table 2.

The association between pathogenicity and virulence factor.

Groups	Gene a	Absent	Present	p b
Toxin	vat	1.34 ± 0.52	1.48 ± 0.47	ns
	tsh	1.39 ± 0.51	1.50 ± 0.37	ns
	sitA	1.32 ± 0.54	1.42 ± 0.49	ns
	picU	1.41 ± 0.49	1.20 ± 0.65	ns
	cdtB	1.40 ± 0.50	1.29 ± 0.61	ns
	sat	1.39 ± 0.49	1.42 ± 0.55	ns
	hlyA	1.41 ± 0.48	1.36 ± 0.58	ns
	cnf1	1.38 ± 0.49	1.49 ± 0.59	ns
Adhesin	ibeA	1.40 ± 0.51	1.34 ± 0.39	ns
	fimH	0.93 ± 0.52	1.41 ± 0.50	ns
	sfaH	1.39 ± 0.50	1.47 ± 0.60	ns
	hek	1.40 ± 0.47	1.38 ± 0.59	ns
	afa/draBC	1.38 ± 0.51	1.56 ± 0.41	ns
	focH	1.43 ± 0.49	1.19 ± 0.58	ns
	papG II	1.36 ± 0.52	1.48 ± 0.46	ns
	papG III	1.38 ± 0.50	1.66 ± 0.52	ns
	iha	1.39 ± 0.49	1.42 ± 0.54	ns
Iron acquisition	fyuA	1.17 ± 0.49	1.48 ± 0.48	0.001
	irp2	1.17 ± 0.49	1.48 ± 0.48	0.002
	chuA	1.14 ± 0.53	1.51 ± 0.45	<0.001
	iutA	1.37 ± 0.52	1.42 ± 0.49	ns
	iucC	1.35 ± 0.53	1.44 ± 0.48	ns
	ireA	1.37 ± 0.52	1.50 ± 0.42	ns
	iroN	1.38 ± 0.51	1.42 ± 0.49	ns
Others	ompT	1.31 ± 0.49	1.50 ± 0.50	0.02
	traT	1.28 ± 0.55	1.47 ± 0.46	0.004
	cvaC	1.38 ± 0.53	1.51 ± 0.34	ns
	malX	1.26 ± 0.55	1.51 ± 0.43	0.004
	usp	1.23 ± 0.54	1.57 ± 0.40	<0.001

^abmaE and feoB are exclude, because no and all strains bear the VFs, respectively. ^b p value by Mann-Whitney U test. ns, no significant.