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Table 4 Distribution of foods involved in NoV and bacterial outbreaks. Catalonia, 15 October 2004 – 30 October 2005

From: Epidemiology of foodborne Norovirus outbreaks in Catalonia, Spain

  NoV outbreaks Bacterial outbreaks p value *
Mayonnaise and similar 0 27 (31.4) 0.005
Other products containing egg 2 (6.7) 19 (22.1) 0.51
Fish and seafood 8 (26.7) 2 (2.3) < 0.0001
Meat/sausage 1 (3.3) 6 (7.0) 1.0
Vegetables 2 (6.6) 0 0.04
Fowl 0 3 (3.5) 1.0
Cake shops 3 (10.0) 3 (3.5) 0.06
Others 1 (3.3) 9 (10.5) 0.67
Unknown 13 (43.3) 17 (19.8) 0.003
  1. *Fisher test calculated comparing each food with respect to all foods involved