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Volume 18, Number 9—September 2012
Dispatch

Yersinia enterocolitica Outbreak Associated with Ready-to-Eat Salad Mix, Norway, 2011

Emily MacDonaldComments to Author , Berit Tafjord Heier, Karin NygÃ¥rd, Torunn Stalheim, Kofitsyo S. Cudjoe, Taran Skjerdal, Astrid Louise Wester, Bjørn-Arne Lindstedt, Trine-Lise Stavnes, and Line Vold
Author affiliations: Norwegian Institute of Public Health, Oslo, Norway (E. MacDonald, B.T. Heier, K. Nygård, A.L. Wester, B.-A. Lindstedt, T.-L. Stavnes, L. Vold); Norwegian Food Safety Authority, Oslo (T. Stalheim); and Norwegian Veterinary Institute, Oslo (K.S. Cudjoe, T. Skjerdal)

Main Article

Table

Results from univariate conditional logistic regression analyses of a Yersinia enterocolitica outbreak, Norway, February–April 2011

Exposure No. cases, n = 9 No. controls, n = 26* Matched odds ratio† (95% CI) p value
Ready-to-eat salad mix 6 3 13.7 (1.6–116.3) 0.02
Diced ham, ham pieces 5 3 6.3 (1.2–32.9) 0.03
Chicken breast 8 9 10.0 (1.2–83.6) 0.03
Arugula 7 8 9.8 (1.2–83.6) 0.04
Pork chops 4 3 8.4 (0.9–78.6) 0.06
Bean sprouts 3 1 8.2 (0.8–79.3) 0.07
Sugar peas 6 8 3.7 (0.9–16.1) 0.08
Iceberg lettuce 8 13 6.6 (0.8–57.5) 0.09

*n = 25 for ready-to-eat salad mix.

Main Article

Page created: August 17, 2012
Page updated: August 17, 2012
Page reviewed: August 17, 2012
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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