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Table 4 Results of distribution of virulence genes in STEC isolates from broiler, duck, cattle, and human samples

From: Genetic and antimicrobial resistance profiles of non-O157 Shiga toxin-producing Escherichia coli from different sources in Egypt

Origin

Serotype

Virulence genes

stx1

stx1d

stx2

stx2c

stx2e

eae

ehxA

Broilers

O146:H21

+*

+

+

-**

+

–

+

Broilers

O1:H7

+

+

+

–

–

–

+

Broilers

O1:H7

+

+

+

–

+

–

+

Broilers

O127:H6

+

+

+

–

+

–

+

Broilers

O78 (2 strains)***

+

+

+

–

+

–

+

Broilers

O2:H6

+

+

+

–

+

–

–

Duck

O91:H21 (2 strains)

+

+

+

–

+

–

+

Duck

O78

+

+

–

–

+

–

+

Duck

O153:H2

+

+

+

+

+

–

–

Duck

O91:H21

+

+

+

–

+

–

–

Duck

O2:H6

+

+

+

–

+

–

–

Duck

O128:H2

+

+

–

–

+

–

–

Duck

O78

+

+

–

–

+

–

–

Duck

O2:H6

+

+

+

–

+

–

+

Duck

O78 (2 strains)

+

+

+

–

+

–

+

Duck

O26:H11

+

+

–

–

–

–

+

Duck

O128:H2

+

+

+

–

+

–

+

Duck

O121:H7

+

+

+

–

+

–

–

Meat

O86

+

+

+

–

+

–

+

Meat

O111:H2

+

+

–

–

+

–

+

Meat

O111:H2

+

+

+

–

–

–

–

Meat

O128:H2

+

+

–

–

–

–

–

Meat

O26:H11

+

–

+

–

+

–

+

Milk

O55:H7

+

+

+

–

+

–

–

Milk

O26:H11

+

+

+

–

–

–

+

Milk

O55:H7

+

+

+

–

–

–

+

Milk

O91:H21

+

–

+

+

–

–

–

Milk

O91:H21

+

–

+

–

+

–

+

Milk

O127:H6

+

+

+

–

–

–

+

Human urine

O15:H2

+

+

+

–

–

–

+

Human urine

O15:H2 (2 strains)

+

+

–

–

–

–

+

Human urine

O15:H2 (2 strains)

+

–

+

–

–

–

+

Human urine

O17:H18

+

+

+

–

+

–

+

Human urine

O17:H18

+

+

–

–

+

–

+

Human urine

O17:H18

+

–

+

–

+

–

+

Human urine

O7:H2 (3 strains)

+

+

+

–

+

–

+

Human urine

O2:H6 (2 strains)

+

+

+

–

+

–

+

Human urine

O8:H21

+

+

+

–

+

–

+

Human urine

O8:H21

+

+

+

–

+

+

+

Human urine

O83

+

–

+

–

–

–

–

Human urine

O125:H21

+

–

+

–

–

–

+

Human urine

O75

+

+

+

–

+

+

+

Human urine

O124

+

+

–

+

+

–

+

Human ear discharge

O8:H21 (3 strains)

+

+

+

–

+

–

+

Human ear discharge

O15:H2 (2 strains)

+

+

+

–

–

–

+

Human ear discharge

O15:H2

+

+

–

–

–

–

–

Human ear discharge

O17:H18 (2 strains)

+

+

+

–

+

–

+

Human ear discharge

O17:H18

+

–

–

–

+

–

–

 

Total (percentage)

60/60 (100%)

51/60 (85%)

48/60 (80%)

3/60 (5%)

42/60 (70%)

2/60 (3.3%)

46/60 (76.7%)

  1. (+)* positive, (−)** negative
  2. *** Each STEC strain was obtained from separate sample