Volume 8, Number 4—April 2002
Dispatch
Salmonella enterica Serotype Enteritidis Phage Type 4b Outbreak Associated with Bean Sprouts
Yvonne THP van Duynhoven*
, Marc-Alain Widdowson*, Carolien M. de Jager*, Teresa Fernandes*, Sabine Neppelenbroek*, Winette van den Brandhof*, Wim J.B. Wannet*, Jan A. van Kooij†, Henk J.M. Rietveld‡, and Wilfrid van Pelt*
, Marc-Alain Widdowson*, Carolien M. de Jager*, Teresa Fernandes*, Sabine Neppelenbroek*, Winette van den Brandhof*, Wim J.B. Wannet*, Jan A. van Kooij†, Henk J.M. Rietveld‡, and Wilfrid van Pelt*Table
Matched univariate analysis (24 pairs) of the association between Salmonella enterica serotype Enteritidis phage type 4b infection and various food items, the Netherlands, November–December, 2000
| Food item | Exposed case, unexposed control No. of pairs | Unexposed case, exposed control No. of pairs | Matched ORa (CI)b | % Cases exposed |
|---|---|---|---|---|
| Chicken | 8 | 2 | 3.0 (0.8-38.7) | 71 |
| Beef | 2 | 5 | 0.4 (0.04-2.4) | 71 |
| Fish | 6 | 3 | 2.0 (0.4-12.4) | 54 |
| Eggs | 4 | 2 | 2.0 (0.3-22.1) | 79 |
| Tomato | 9 | 3 | 3.0 (0.8-17.2) | 71 |
| Lettuce | 5 | 8 | 0.6 (0.2-2.2) | 50 |
| Alfalfa sprouts | 1 | 0 | Undefined | 4 |
| Cabbage | 5 | 5 | 1.0 (0.2-4.4) | 38 |
| Bean sprouts | 13 | 1 | 13.0 (2.0-552.5) | 58 |
| Cucumber | 6 | 4 | 1.5 (0.4-7.2) | 63 |
| Paprika | 6 | 4 | 1.5 (0.4-7.2) | 54 |
| Peppers | 4 | 0 | Undefined | 17 |
| Onion | 9 | 3 | 3.0 (0.8-17.2) | 67 |
| Carrots | 6 | 8 | 0.8 (0.2-2.5) | 46 |
| Parsley | 6 | 2 | 3.0 (0.5-30.4) | 38 |
| Celery | 7 | 2 | 3.5 (0.7-34.5) | 29 |
aMaximum Likelihood Estimate of odds ratio (OR).
bExact 95% confident limits for Maximum Likelihood Estimate of OR.
