Table 1 Summaries of  Listeria monocytogenes  isolates used in this study by sequence types

ST1

5

4b

2001, 2005-2006

D, E, F, I

Pork, cooked meat, food*

ST2

5

4b

2001

D, G

Pork, beef, cooked meat, chicken

ST3

8

1/2b

2001-2002, 2005-2006

B, C, D, H, L

Cooked meat, chicken, food*

ST5

5

1/2b

2001, 2005, 2007

C, D, K, L

Cooked meat, pork

ST6

1

4b

2001

D

Chicken

ST7

7

1/2a

2005-2006

H

Food*

ST8

22

1/2a

2001-2002, 2005–2006, 2008

A, B, D, H, I, J

Cooked meat, pork, beef, ice cream, chicken, food*

ST9

60

1/2c

2000-2002, 2004-2008

A, B, C, D, G, H, I, K, L

Pork, chicken, cooked meat, aquatic product, beef, mutton, fish, food*

ST14

3

1/2a

2005, 2006, 2008

H, J, L

Chicken, food*

ST59

5

1/2b

2001, 2005, 2007

I, K, L

Ice cream, pork, chicken

ST83

1

1/2c

2002

B

Pork

ST87

19

1/2b, 3b

2001-2007

B, D, E, G, H, K, L

Pork, vegetables, chicken, cooked meat, mutton, food*

ST101

6

1/2a

2003, 2005-2006

D, L

Pork, chicken, food*

ST120

2

1/2a

2002, 2008

A, B

Pork, meat

ST121

13

1/2a

2001-2002, 2004-2008

A, B, C, D, H, J, K, L

Pork, chicken, cooked meat, food*

ST122

12

1/2c

2000-2001

G

Pork, chicken, cooked meat, vegetables, mutton

ST124

1

1/2a

2005

D

Pork

ST155

7

1/2a, 3a

2001-2002, 2008

A, B

Chicken, mutton

ST199

9

1/2a

2001-2002, 2005-2006

C, D, G, H

Pork, cooked meat, chicken, food*

ST218

1

1/2b

2005

L

Chicken

ST288

1

1/2b

2005

L

Chicken

ST295

1

1/2b

2001

I

Ice cream

ST296

1

1/2b

2001

D

Chicken

ST297

1

1/2a

2003

D

Pork

ST298

1

4b

2006

F

Food*

ST299

2

4c

2006

E, F

Fish, food*

ST300

1

1/2a

2004

B

Chicken

ST301

1

1/2c

2002

B

Beef

ST302

2

1/2a, 3a

2002

B

Chicken

ST304

2

1/2c

2000

G

Beef, pork

ST305

1

1/2b

2001

G

Cooked meat

ST306

1

1/2c

2001

G

Vegetables

ST307

2

1/2a

2003-2004

B, D

Pork

ST308

1

4b

2006

F

Food*

ST310

1

1/2b

2005

E

Meat

ST312

1

1/2c

2000

G

Pork