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| Food exposure | n | % |
|---|---|---|
| Chicken | 26 | 44.8 |
| Raw egg butter* | 25 | 43.1 |
| Pork | 22 | 37.9 |
| Pate* | 20 | 34.5 |
| Mayonnaise* | 10 | 17.2 |
| Ham | 5 | 8.6 |
| Salad | 5 | 8.6 |
* 18 cases replied “unknown” to these food exposures
