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Table 1 Characteristics of Shiga toxin-producing E. coli O157 isolated from food and food-producing animals

From: Toxigenic properties and stx phage characterization of Escherichia coli O157 isolated from animal sources in a developing country setting

ID no.

Source

stx 2 a

Stx2 titre

cdt a

TNPa

NMa PCR

Q933/Q21d

Presence of stx2 subtypes

Phage integration sitee

A

B

C

D

yehV

wrbA

C8

Cow

+

-b

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

C21

Cow

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

C35

Cow

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

C61

Cow

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

C62

Cow

+

2

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

C96

Cow

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

C106

Cow

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

C111

Cow

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

C118

Cow

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M2

Buffalo

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

Variant-R

I

M18

Buffalo

+

64

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M21

Buffalo

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M29

Buffalo

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M34

Buffalo

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M42

Buffalo

+

–

–

–

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M52

Buffalo

+

–

–

–

–

–

–

+

Q 21

stx 2a , stx 2d

I

I

M58

Buffalo

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M64

Buffalo

+

2

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M98

Buffalo

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M103

Buffalo

+

2

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M112

Buffalo

+

8

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M126

Buffalo

+

2

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M129

Buffalo

+

32

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

Variant-R

I

M133

Buffalo

+

128

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M139

Buffalo

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M143

Buffalo

+

32

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M163

Buffalo

+

128

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M168

Buffalo

+

2

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

M171

Buffalo

+

16

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

Variant-R

I

M173

Buffalo

+

16

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

G10

Goat

+

2

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

G51

Goat

+

64

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

Variant-R

I

G56

Goat

+

–

–

–

+

+

–

+

–

stx 2a , stx 2d

O

I

G61

Goat

+

2

–

+

+

+

–

+

–

stx 2a , stx 2d

Variant-R

I

G63

Goat

+

16

–

+

+

+

–

+

–

stx 2a , stx 2d

Variant-R

I

G67

Goat

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

O

I

G71

Goat

+

128

–

+

+

+

–

+

–

stx 2a , stx 2d

Variant-R

I

G72

Goat

+

2

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

G85

Goat

+

2

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

G99

Goat

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

CM2

Beef

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

CM5

Beef

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

O

I

CM7

Beef

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

O

I

CM52

Beef

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

CM56

Beef

+

–

–

+

–

+

+

–

–

stx 2a , stx 2d

I

I

MM27

Buf Meatc

+

–

–

+

+

+

+

+

Q 21

stx 2a , stx 2d

I

I

MM28

Buf Meatc

+

–

–

+

–

+

+

–

–

stx 2d

I

I

E. coli NCTC12079

Clinical isolate

+

128

–

–

–

–

–

–

Q 933

NDf

NDf

  1. aExamined by PCR method. +, positive; −, negative
  2. bStx2 toxin detection. -, not detected
  3. cBuffalo meat
  4. dPresence of either Q933 or Q21 gene. -, absence of both genes
  5. eI, intact; O, occupied. ‘Intact’ indicates detection of neither junction. ‘Variant-R’ indicates that the left junction between the bacteriophage and the chromosome was detected but the right junction was not detected. ‘Occupied’ indicates bilateral detection of that integration site
  6. fNot Done