Table 1 Abundance of genotype/phenotype factors by source (Bovine, Ovine, Food/Environment and Clinical) for the Scottish E. coli O157 isolates.

From: Whole Genome Sequencing demonstrates that Geographic Variation of Escherichia coli O157 Genotypes Dominates Host Association

Factor

Sub-type

No. (%) of strains with factora

Bovine

Ovine

Food/Env.

Clinical

Statistically significant

(n = 26)

(n = 25)

(n = 20)

(n = 74)

pairwise comparisonsb

O encoding antigen

rfb O157

26 (100.0)

25 (100.0)

20 (100.0)

74 (100.0)

NA

Intimin

eae

26 (100.0)

25 (100.0)

20 (100.0)

74 (100.0)

NA

Enterohemolysin

hlyA

26 (100.0)

25 (100.0)

20 (100.0)

74 (100.0)

NA

Shiga toxin

stx1a/stx2a

0 (0.0)

0 (0.0)

1 (5.0)

3 (4.1)

none

 

stx1a/stx2c

6 (23.1)

4 (16.0)

0 (0.0)

12 (16.2)

BF

 

stx2a

0 (0.0)

0 (0.0)

3 (15.0)

5 (6.8)

none

 

stx2a/stx2c

18 (69.2)

14 (56.0)

13 (65.0)

45 (60.8)

none

 

stx2c

2 (7.7)

6 (24.0)

0 (0.0)

5 (6.8)

CO, FO

 

−ve

0 (0.0)

1 (4.0)

3 (15.0)

4 (5.4)

none

Phage Type

PT2

1 (3.8)

1 (4.3)

2 (22.2)

3 (5.8)

none

 

PT21/28

16 (61.5)

11 (47.8)

4 (44.4)

27 (51.9)

none

 

PT32

2 (7.7)

3 (13.0)

2 (22.2)

8 (15.4)

none

 

PT8

5 (19.2)

4 (17.4)

0 (0.0)

5 (9.6)

none

 

Otherc

2 (7.7)

4 (17.4)

1 (11.1)

9 (17.3)

none

SBI

Sub-type

     
 

ASY2a2c

9 (34.6)

11 (44.0)

4 (20.0)

27 (36.5)

none

 

SY1a2c

5 (19.2)

2 (8.0)

0 (0.0)

12 (16.2)

none

 

SY2a2c

8 (30.8)

2 (8.0)

9 (45.0)

14 (8.9)

CF, CO, FO

 

SY2c

1 (3.8)

2 (8.0)

0 (0.0)

3 (4.1)

CF, FO

 

YN

0 (0.0)

1 (4.0)

1 (5.0)

3 (4.1)

none

 

Otherd

3 (11.5)

7 (28.0)

6 (30.0)

15 (20.3)

none

  1. aNo of strains phage typed: bovine (n = 26), ovine (n = 23), food/env (n = 9) and clinical (n = 52).
  2. bListed are statistically different pairwise comparisons where B = bovine, O = ovine, F = Food/Environmental and C = clinical. Statistical significance determined by Fisher’s exact test.
  3. cOther defines all Phage Types present in <5 Isolates.
  4. dOther defines all SBI genotypes present in <5 isolates.
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