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Table 2 Distribution of virulence factors in E. coli subtypes

From: Serogroups, virulence genes and antibiotic resistance in Shiga toxin-producing Escherichia coli isolated from diarrheic and non-diarrheic pediatric patients in Iran

Age (Month)

Subtype

No. Positive samples

Virulence gene

 

Non detected

12 (33.66%)

-

 

EHEC

-

 
   

stx1, eaeA, ehly: -

 

AEEC

24 (66.66%)

 

1–12 (52)

  

stx1: 18 (75.00%)

   

stx2: 2 (8.33%)

eaeA: 14 (58.33%)

stx1, eaeA: 15 (62.50%)

stx2, eaeA: 7 (29.16%)

   

stx1, stx2, eaeA: 2 (8.33%)

 

Total

36 (69.23%)

 
 

Non detected

18 (30.50%)

-

 

EHEC

2 (3.38%)

 
   

stx1, eaeA, ehly: 2 (100%)

 

AEEC

39 (66.10%)

 

13–24 (76)

  

stx1: 29 (74.35%)

   

stx2: 4 (10.25%)

eaeA: 24 (61.53%)

stx1, eaeA: 27 (69.23%)

stx2, eaeA: 8 (20.51%)

stx1, stx2, eaeA: 4 (10.25%)

 

Total

59 (77.63%)

 
 

Non detected

6 (25.00%)

-

 

EHEC

1 (4.16%)

 
   

stx1, eaeA, ehly: 1 (100%)

 

AEEC

17 (70.83%)

 

25–36 (39)

  

stx1: 13 (76.47%)

   

stx2: 2 (11.76%)

eaeA: 12 (70.58%)

stx1, eaeA: 7 (41.17%)

stx2, eaeA: 8 (47.05%)

stx1, stx2, eaeA: 2 (11.76%)

 

Total

24 (61.53%)

 
 

Non detected

4 (25.00%)

-

 

EHEC

 

stx1, eaeA, ehly: -

37–48 (24)

AEEC

12 (75.00%)

stx1: 8 (66.66%)

   

stx2: 1 (8.33%)

   

eaeA: 6 (50.00%)

stx1, eaeA: 6 (50.00%)

stx2, eaeA: 5 (41.66%)

stx1, stx2, eaeA: 1 (8.33%)

 

Total

16 (66.66%)

 
 

Non detected

7 (36.84%)

-

 

EHEC

3 (15.78%)

 
   

stx1, eaeA, ehly: 3 (100%)

 

AEEC

9 (47.36%)

 

49–60 (33)

  

stx1: 7 (77.77%)

   

stx2: 1 (11.11%)

eaeA: 6 (66.66%)

stx1, eaeA: 4 (44.44%)

stx2, eaeA: 4 (44.44%)

stx1, stx2, eaeA: 1 (11.11%)

 

Total

19 (57.57%)

 
 

Non detected

16 (51.61%)

 
 

EHEC

  
   

stx1, eaeA, ehly

 

AEEC

15 (48.38%)

 

Non diarrheic (84)

  

stx1: 12 (80.00%)

   

stx2: 2 (13.33%)

   

eaeA: 13 (86.66%)

stx1, eaeA: 7 (46.66%)

stx2, eaeA: 6 (40.00%)

stx1, stx2, eaeA: 2 (13.33%)

 

Total

31 (36.90%)

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