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Table 2 Clinical and isolate subtype data associated with the major Asc I PFGE clusters identified in this study

From: 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 4/5 2 3 2 5 7 4b 6 II
8 2/2 2/4 2 4 none 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. a pregnancy related cases are not included.
  3. b information about underlying diseases was unavailable for some cases.
  4. c ST sequence type, CC clonal complex.
  5. d EC epidemic clone.