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Table 1 Clinical and isolate subtype data associated with the major Asc I PFGE clusters identified in this study

From: Erratum: Enhanced surveillance of invasive listeriosis in the Lombardy region, Italy, in the years 2006–2010 reveals major clones and an increase in serotype 1/2a

Cluster

Gender (no. of cases) M/Fa

Age (no. of cases) >65 ys/totala

Clinical data

Isolate/subtype data

Number of pregnancy related cases

Infection typea

Number. of cases with underlying conditiona,b

No. of isolates

Serotype

ST/CCc

ECd

Septicaemia

Meningitis

2

7/5

8/12

1

9

3

4

13

4b

1

I

3

5/2

3/7

1

3

4

6

8

4b

1

I

4

6/5

5/11

None

10

1

7

11

1/2b

3

 

5

5/2

4/7

1

3

4

6

8

4b

2

IV

6

1/3

1/4

2

2

1

3

5

4b

4

 

7

1/4

0/5

2

3

2

5

7

4b

6

II

8

2/2

2/4

2

4

0

2

6

1/2a

29

 

9

5/3

3/8

3

7

1

6

5

1/2a

398

 

8

1/2a

8

V

11

12/18

26/30

1

20

8

26

31

1/2a

38/101

 

12

4/2

1/6

none

4

1

5

6

1/2a

21

 
  1. Only the clusters containing more than three isolates are included.
  2. apregnancy related cases are not included.
  3. binformation about underlying diseases was unavailable for some cases.
  4. cST, sequence type; CC, clonal complex.
  5. dEC, epidemic clone.