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Table 1 Distribution of foodborne outbreaks according to etiology. Catalonia, 15 October 2004 – 30 October 2005

From: Epidemiology of foodborne Norovirus outbreaks in Catalonia, Spain

Etiology Number of outbreaks (%) Number of persons affected (%)
Salmonella 72 (39.8) 605 (29.4)
NoV 30 (16.6) 741 (35.0)
Other bacteria * 14 (7.7) 413 (20.1)
Vegetable toxins 16 (8.8) 57 2.7)
Other toxic substances 12 (6.6) 39 (1.9)
Unknown 37 (20.5) 263 (12.8)
Total 181 (100.0) 2118 (100.0)
  1. * Staphylococcus aureus (6), Clostridium perfringens (6), Campylobacter jejuni (1), Streptococcus pyogenes (1).