Table 1 Proportion of gastrointestinal illnesses excluded from source attribution analyses
From: A descriptive study of reportable gastrointestinal illnesses in Ontario, Canada, from 2007 to 2009
Reportable disease | All reported cases: exclusions (%) | ||||
|---|---|---|---|---|---|
N | Not followed up | Multiple exposures | No primary source** | No primary setting† | |
Amebiasis | 2,134 | 54.3% | 0.1% | 0.7% | 1.4% |
Botulism | 10 | 10.0% | 0.0% | 0.0% | 10.0% |
Campylobacteriosis | 10,916 | 39.1% | 1.2% | 2.4% | 4.9% |
Cryptosporidiosis | 1,048 | 20.9% | 1.7% | 3.6% | 5.8% |
Cyclosporiasis | 341 | 15.8% | 1.8% | 1.5% | 2.1% |
Giardiasis | 4,726 | 39.4% | 0.6% | 2.8% | 3.8% |
Hepatitis A | 354 | 15.0% | 2.8% | 0.6% | 4.2% |
Listeriosis | 189 | 19.6% | 17.5% | 3.2% | 3.7% |
Paratyphoid Fever | 147 | 3.4% | 0.0% | 3.4% | 0.0% |
Salmonellosis | 7,514 | 23.1% | 2.0% | 0.7% | 3.9% |
Shigellosis | 727 | 13.1% | 1.8% | 1.0% | 1.4% |
Typhoid fever | 259 | 3.9% | 0.4% | 0.0% | 0.0% |
VTEC-illness | 760 | 17.4% | 7.2% | 4.7% | 7.6% |
Yersiniosis | 772 | 27.1% | 1.4% | 0.6% | 2.5% |
Total | 29,897 | 32.9% | 1.5% | 1.9% | 4.1% |