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Table 4 Sporadic domestic reportable gastrointestinal illnesses in Ontario by known or unknown exposure between 2007 and 2009

From: A descriptive study of reportable gastrointestinal illnesses in Ontario, Canada, from 2007 to 2009

Reportable disease Domestic sporadic cases Primary source (%)** Primary setting (%)†
  n Known Unknown Known Unknown
Amebiasis 594 20.2% 79.8% 2.5% 97.5%
Botulism 9 11.1% 88.9% 11.1% 88.9%
Campylobacteriosis 4,982 25.5% 74.5% 16.0% 84.0%
Cryptosporidiosis 473 34.0% 66.0% 19.5% 80.5%
Cyclosporiasis 103 17.5% 82.5% 9.7% 90.3%
Giardiasis 1,646 20.9% 79.1% 10.0% 90.0%
Hepatitis A 152 35.5% 64.5% 10.5% 89.5%
Listeriosis 79 15.2% 84.8% 11.4% 88.6%
Paratyphoid Fever 21 9.5% 90.5% 4.8% 95.2%
Salmonellosis 4,107 28.0% 72.0% 18.4% 81.6%
Shigellosis 310 29.0% 71.0% 9.0% 91.0%
Typhoid Fever 32 6.2% 93.8% 6.2% 93.8%
VTEC-illness 388 40.7% 59.3% 27.3% 72.7%
Yersiniosis 445 18.9% 81.1% 14.6% 85.4%
Total 13,341 26.0% 74.0% 15.4% 84.6%
  1. ** The most likely source as identified on case follow-up (excludes cases with multiple exposures, travel cases, and outbreak cases).
  2. † The most likely type of location where exposure took place based on case follow-up (excludes cases with multiple exposures, travel cases, and outbreak cases).