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Table 1 Yersinia strains isolated from 406 patients by bio/serotype and demographical characteristics of the patients, Finland, 2006.

From: Symptoms and sources of Yersinia enterocolitica-infection: a case-control study

  Number of strains (%) Mean age, years (min max) Proportion of men N (%)
Y. enterocolitica    
3-4/O:3 or 2/O:9 74 (18%) 32 (0.6-80) 41 (55%)
1A or non-biotypable 263 (65%) 50 (2-99) * 98 (37%) *
Y. enterocolitica- like species   
Y. bercovieri 17 (4%) 44 (5-81) * 3 (18%) *
Y. frederiksenii 26 (6%) 42 (3-73) 10 (38%)
Y. intermedia 8 (2%) 68 (40-87) * 5 (63%)
Y. kristensenii 4 (1%) 48 (23-79) 2 (50%)
Y. mollaretii 12 (3%) 62 (26-93) * 2 (17%) *
Y. rohdei 2 (0.5%) 55 (47-63) 1 (50%)
  1. * p < 0.05 for the difference compared to YE bio/serotypes 3-4/O:3 or 2/O:9