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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.