Volume 11, Number 7—July 2005
Dispatch
Salmonella Agona Outbreak from Contaminated Aniseed, Germany
Judith Koch*
, Annette Schrauder*, Katharina Alpers*, Dirk Werber*, Christina Frank*, Rita Prager†, Wolfgang Rabsch†, Susanne Broll*, Fabian Feil‡, Peter Roggentin§, Jochen Bockemühl§, Helmut Tschäpe†, Andrea Ammon*, and Klaus Stark*
, Annette Schrauder*, Katharina Alpers*, Dirk Werber*, Christina Frank*, Rita Prager†, Wolfgang Rabsch†, Susanne Broll*, Fabian Feil‡, Peter Roggentin§, Jochen Bockemühl§, Helmut Tschäpe†, Andrea Ammon*, and Klaus Stark*
Table
Univariate analysis of exposure factors for Salmonella Agona infection among infants ≤13 months of age, Germany, October 2002–July 2003
| Exposure | Case-patients (n = 31) |
Controls (n = 130) |
||||
|---|---|---|---|---|---|---|
| No. | (%) | No. | (%) | Odds ratio | 95% CI* | |
| Any tea | 30 | (97) | 67 | (52) | 28.2 | 3.7–213.1 |
| Any herbal tea from tea bags | 24 | (77) | 41 | (32) | 7.4 | 2.9–18.0 |
| Tea from tea bags with aniseed | 21 | (68) | 9 | (7) | 28.2 | 10.3–77.7 |
| Tea from tea bags without aniseed | 3 | (10) | 33 | (25) | 0.3 | 0.1–1.1 |
| Instant tea | 9 | (29) | 34 | (26) | 1.2 | 0.5–2.9 |
| Breast feeding | 6 | (19) | 67 | (52) | 0.2 | 0.1–0.7 |
| Subgroup cases† (n = 24) | Subgroup controls† (n = 41) | |||||
| Always used boiling water for tea preparation | 16 | (67) | 35 | (85) | 0.3 | 0.1–1.2 |
*CI, confidence interval.
†Subgroup analysis on case-patients and controls who drank tea made from tea bags.
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