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Table 2 Xba I-PFGE types of S. Infantis isolates on 478 cattle farms.

From: Genetic surveillance of endemic bovine Salmonella Infantis infection

 

PFGE type*

 

Year

type 1

type 2

type 3

other types **

Total

1985

9

  

1

10

1986

9

1

 

2

12

1987

5

1

 

3

9

1992

2

1

 

1

4

1993

11

  

3

14

1994

15

6

 

7

28

1995

179

12

11

41

243

1996

70

12

7

27

116

1997

11

2

2

3

18

1998

13

2

2

5

22

1999

7

2

 

1

10

2000

2

  

1

3

2001

1

  

1

2

2002

   

1

1

2003

1

  

1***

2

 

335

39

22

98

494

  1. *Only bands larger than 125 kb of the Xba I profile were regarded. Generally, one PFGE type per farm per year was included. If a farm had several types in the same year, all profiles were included.
  2. **48 different PFGE types.
  3. ***A new type not seen previously. Resembles PFGE type 167 (Fig. 2), with two additional bands of 125 and 140 kb.
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Acta Veterinaria Scandinavica

ISSN: 1751-0147