The prevalence of the iutA and ibeA genes in Escherichia coli isolates from severe and non-severe patients with bacteremic acute biliary tract infection is significantly different

Table 3 Comparison of patterns of phylogenetic groups and prevalence of virulence factors and severity of bacteremia

	Total	Non-severe group (Pitt < 2)	Severe group (Pitt ≥ 2)	P value
Phylogenetic group	72	44	28	0.732
B2	49 (68.1%)	31 (70.5%)	18 (64.3%)
B1	8 (11.1%)	3 (6.8%)	5 (17.9%)
E	6 (8.3%)	4 (9.1%)	2 (7.1%)
A	4 (5.6%)	2 (4.5%)	2 (7.1%)
F	4 (5.6%)	3 (6.8%)	1 (3.6%)
D	1 (1.4%)	1 (2.2%)	0
ST				0.165
ST131	17 (23.6%)	13 (29.5%)	4 (14.3%)
ST95	14 (19.4%)	8 (18.2%)	6 (21.4%)
ST73	5 (6.9%)	4 (9.1%)	1 (3.6%)
ST127	2 (2.8%)	2 (4.5%)	0
ST405	2 (2.8%)	2 (4.5%)	0
ST357	2 (2.8%)	0	2 (7.1%)
ST453	2 (2.8%)	1 (2.2%)	1 (3.6%)
ST1196	2 (2.8%)	1 (2.2%)	1 (3.6%)
ST10	1 (1.4%)	1 (2.2%)	0
ST117	1 (1.4%)	1 (2.2%)	0
ST126	1 (1.4%)	1 (2.2%)	0
ST144	1 (1.4%)	1 (2.2%)	0
ST345	1 (1.4%)	1 (2.2%)	0
ST354	1 (1.4%)	0	1 (3.6%)
ST420	1 (1.4%)	1 (2.2%)	0
ST429	1 (1.4%)	1 (2.2%)	0
ST457	1 (1.4%)	1 (2.2%)	0
ST607	1 (1.4%)	0	1 (3.6%)
ST648	1 (1.4%)	1 (2.2%)	0
ST683	1 (1.4%)	0	1 (3.6%)
ST1193	1 (1.4%)	0	1 (3.6%)
ST1304	1 (1.4%)	0	1 (3.6%)
ST1380	1 (1.4%)	1 (2.2%)	0
ST1415	1 (1.4%)	1 (2.2%)	0
ST1851	1 (1.4%)	0	1 (3.6%)
ST2074	1 (1.4%)	1 (2.2%)	0
ST2732	1 (1.4%)	0	1 (3.6%)
ST3532	1 (1.4%)	0	1 (3.6%)
ST6998	1 (1.4%)	0	1 (3.6%)
ST7344	1 (1.4%)	0	1 (3.6%)
Un-typable	4 (5.6%)	1 (2.2%)	3 (10.7%)

ISSN: 1757-4749