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Table 1 Distribution of virulence factors classified according to phylogenetic group

From: Characterization and virulence clustering analysis of extraintestinal pathogenic Escherichia coli isolated from swine in China

Virulence factors

NO. of ExPEC isolates(%)

 

Total (n = 64;%)

Group A (n = 37;57.8%)

GroupB1 (n = 6;9.4%)

GroupB2 (n = 7;10.9% )

Group D (n = 14;21.9%)

Siderophores

  iutA

39(60.1)

24(64.9)a

1(16.7)b

7(100)b

7(50)b

  iroN

17(26.6)

4(10.9)a

3(50)b

6(85.7)b

4(28.6)b

  fyuA

15(23.4)

5(13.5)a

0(0)a

7(100)b

3(21.4)c

  ireA

7(10.9)

3(8.1)

0(0)

1(14.3)

3(21.4)

Adhesins

  fimH

52(81.3)

23(62.2)

6(100)

7(103)

11(78.6)

  papC

14(21.9)

5(13.5)a

1(16.7)ab

5(71.4)b

3(21.4)b

  papA

3(4.7)

0(0)a

0(0)ab

3(42.9)b

0(0)b

  sfaA

1(1.6)

1(2.7)

0(0)

0(0)

0(0)

  hraA

13(20.3)

4(10.9)a

0(0)a

5(71.4)b

4(28.6)b

  afa

3(4.7)

3(8.1)

0(0)

0(0)

0(0)

Toxin

  cnf1

5(7.8)

0(0)a

0(0)a

5(71.4)b

0(0)c

  hlyD

5(7.8)

0(0)a

0(0)a

5(71.4)b

0(0)c

  vat

42(65.6)

23(62.2)

4(66.7)

7(100)

8(57.1)

Miscellaneous

  ompA

64(100)

37(100)

6(100)

7(100)

14(100)

  ups

7(10.9)

0(0)a

0(0)a

7(100)b

0(0)c

  traT

40(62.5)

30(81.1)a

4(66.7)ab

3(42.9)b

3(21.4)b

Invasion

  ibeA

2(3.1)

0(0)a

0(0)ab

2(28.6)b

0(0)b

Capsule

     

  kpsMII

10(15.7)

0(0)a

0(0)a

7(100)b

3(21.4)c

  kpsMIII

1(1.6)

0(0)

0(0)

0(0)

1(7.1)

  1. a,b,c P < 0.05