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Volume 26, Number 7—July 2020
Research

Large Nationwide Outbreak of Invasive Listeriosis Associated with Blood Sausage, Germany, 2018–2019

Sven Halbedel1Comments to Author , Hendrik Wilking1, Alexandra Holzer, Sylvia Kleta, Martin A. Fischer, Stefanie Lüth, Ariane Pietzka, Steliana Huhulescu, Raskit Lachmann, Amrei Krings, Werner Ruppitsch, Alexandre Leclercq, Rolf Kamphausen, Maylin Meincke, Christiane Wagner-Wiening, Matthias Contzen, Iris Barbara Kraemer, Sascha Al Dahouk, Franz Allerberger, Klaus Stark2, and Antje Flieger2Comments to Author 
Author affiliations: Robert Koch Institute, Wernigerode, Germany (S. Halbedel, M.A. Fischer, A. Flieger); Robert Koch Institute, Berlin, Germany (H. Wilking, A. Holzer, R. Lachmann, A. Krings, M. Meincke, K. Stark); German Federal Institute for Risk Assessment, Berlin (S. Kleta, S. Lüth, S.A. Dahouk); Freie Universität Berlin, Berlin (S. Lüth); Austrian Agency for Health and Food Safety, Vienna, Austria (A. Pietzka, S. Huhulescu, W. Ruppitsch, F. Allerberger); European Centre for Disease Prevention and Control, Stockholm, Sweden (A. Krings, M. Meincke); Institut Pasteur, Paris, France (A. Leclercq); Ministry for Environment, Agriculture, Conservation and Consumer Protection of the State of North Rhine-Westphalia, Düsseldorf, Germany (R. Kamphausen); State Health Office Baden-Wuerttemberg, Stuttgart, Germany (M. Meincke, C. Wagner-Wiening); Chemical and Veterinary Investigations Office, Fellbach, Germany (M. Contzen); Bavarian Health and Food Safety Authority, Oberschleißheim, Germany (I.B. Kraemer); Rheinisch-Westfälische Technische Hochschule, Aachen, Germany (S.A. Dahouk)

Main Article

Table

Results of multivariable analysis of risk for infection by food consumption from a case-control study during listeriosis outbreak, Germany 2018–2019*

Food item Odds ratio (95% CI)† p value
Minced meat 42.4 (4.3–415.1) 0.001
Blood sausage 23.1 (4.3–123.5) <0.001
Cold cuts, including roast pork and Kassler 15.4 (2.9–82.1) 0.001
Edamer cheese 7.3 (1.6–32.8) 0.009
Smoked ham‡ 0.06 (0.0–0.4) 0.003
Hard cheese‡ 0.2 (0.0–0.9) 0.038

*Includes 40/41 cases and 99/155 controls that confirmed shopping at the implicated supermarket chain.
†Adjusted for age, gender, and residence in northern or southern region.
‡Smoked ham and hard cheese are confounders for cold cuts and Edamer cheese.

Main Article

1These authors contributed equally to this article.

2These authors contributed equally to this article.

Page created: April 27, 2020
Page updated: June 18, 2020
Page reviewed: June 18, 2020
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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