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Euro Surveill. Large multistate outbreak of norovirus gastroenteritis associated with frozen strawberries, Germany, 2012
[Source: Eurosurveillance, full page: (LINK). Abstract, edited.]
Eurosurveillance, Volume 19, Issue 8, 27 February 2014
Surveillance and outbreak reports
Large multistate outbreak of norovirus gastroenteritis associated with frozen strawberries, Germany, 2012
H Bernard<SUP>1</SUP><SUP>,2</SUP>, M Faber <SUP>1</SUP><SUP>,2</SUP>, H Wilking <SUP>1</SUP>, S Haller<SUP>1</SUP><SUP>,3</SUP><SUP>,4</SUP>, M H?hle<SUP>1</SUP>, A Schielke<SUP>1</SUP>, T Ducomble<SUP>1</SUP><SUP>,4</SUP><SUP>,5</SUP>, C Siffczyk<SUP>6</SUP>, S S Merbecks<SUP>7</SUP>, G Fricke<SUP>8</SUP>, O Hamouda<SUP>1</SUP>, K Stark<SUP>1</SUP>, D Werber<SUP>1</SUP>, on behalf of the Outbreak Investigation Team<SUP>9</SUP>
<SUP></SUP>
<SUP>1</SUP>Robert Koch Institute, Berlin, Germany ? 2 These authors contributed equally - 3 Postgraduate Training for Applied Epidemiology, Berlin, Germany - 4 European Programme for Intervention Epidemiology, Stockholm, Sweden - 5 European Centre for Disease Prevention and Control, Stockholm, Sweden - 6 State Health Authority Brandenburg, Zossen, Germany - 7 State Health Authority Saxony, Chemnitz, Germany - 8 Federal Office of Consumer Protection and Food Safety, Berlin, Germany - 9 The team members are listed at the end of the manuscript
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Citation style for this article: Bernard H, Faber M, Wilking H, Haller S, H?hle M, Schielke A, Ducomble T, Siffczyk C, Merbecks SS, Fricke G, Hamouda O, Stark K, Werber D, on behalf of the Outbreak Investigation Team. Large multistate outbreak of norovirus gastroenteritis associated with frozen strawberries, Germany, 2012. Euro Surveill. 2014;19(8):pii=20719. Available online: http://www.eurosurveillance.org/View...rticleId=20719
Date of submission: 24 January 2013
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From 20 September through 5 October 2012, the largest recorded food-borne outbreak in Germany occurred. Norovirus was identified as the causative agent. We conducted four analytical epidemiological studies, two case?control studies and two surveys (in total 150 cases) in secondary schools in three different federal states. Overall, 390 institutions in five federal states reported nearly 11,000 cases of gastroenteritis. They were predominantly schools and childcare facilities and were supplied almost exclusively by one large catering company. The analytical epidemiological studies consistently identified dishes containing strawberries as the most likely vehicle, with estimated odds ratios ranging from 2.6 to 45.4. The dishes had been prepared in different regional kitchens of the catering company and were served in the schools two days before the peaks of the respective outbreaks. All affected institutions had received strawberries of one lot, imported frozen from China. The outbreak vehicle was identified within a week, which led to a timely recall and prevented more than half of the lot from reaching the consumer. This outbreak exemplifies the risk of large outbreaks in the era of global food trade. It underlines the importance of timely surveillance and epidemiological outbreak investigations for food safety.
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Eurosurveillance, Volume 19, Issue 8, 27 February 2014
Surveillance and outbreak reports
Large multistate outbreak of norovirus gastroenteritis associated with frozen strawberries, Germany, 2012
H Bernard<SUP>1</SUP><SUP>,2</SUP>, M Faber <SUP>1</SUP><SUP>,2</SUP>, H Wilking <SUP>1</SUP>, S Haller<SUP>1</SUP><SUP>,3</SUP><SUP>,4</SUP>, M H?hle<SUP>1</SUP>, A Schielke<SUP>1</SUP>, T Ducomble<SUP>1</SUP><SUP>,4</SUP><SUP>,5</SUP>, C Siffczyk<SUP>6</SUP>, S S Merbecks<SUP>7</SUP>, G Fricke<SUP>8</SUP>, O Hamouda<SUP>1</SUP>, K Stark<SUP>1</SUP>, D Werber<SUP>1</SUP>, on behalf of the Outbreak Investigation Team<SUP>9</SUP>
<SUP></SUP>
<SUP>1</SUP>Robert Koch Institute, Berlin, Germany ? 2 These authors contributed equally - 3 Postgraduate Training for Applied Epidemiology, Berlin, Germany - 4 European Programme for Intervention Epidemiology, Stockholm, Sweden - 5 European Centre for Disease Prevention and Control, Stockholm, Sweden - 6 State Health Authority Brandenburg, Zossen, Germany - 7 State Health Authority Saxony, Chemnitz, Germany - 8 Federal Office of Consumer Protection and Food Safety, Berlin, Germany - 9 The team members are listed at the end of the manuscript
_____
Citation style for this article: Bernard H, Faber M, Wilking H, Haller S, H?hle M, Schielke A, Ducomble T, Siffczyk C, Merbecks SS, Fricke G, Hamouda O, Stark K, Werber D, on behalf of the Outbreak Investigation Team. Large multistate outbreak of norovirus gastroenteritis associated with frozen strawberries, Germany, 2012. Euro Surveill. 2014;19(8):pii=20719. Available online: http://www.eurosurveillance.org/View...rticleId=20719
Date of submission: 24 January 2013
______
From 20 September through 5 October 2012, the largest recorded food-borne outbreak in Germany occurred. Norovirus was identified as the causative agent. We conducted four analytical epidemiological studies, two case?control studies and two surveys (in total 150 cases) in secondary schools in three different federal states. Overall, 390 institutions in five federal states reported nearly 11,000 cases of gastroenteritis. They were predominantly schools and childcare facilities and were supplied almost exclusively by one large catering company. The analytical epidemiological studies consistently identified dishes containing strawberries as the most likely vehicle, with estimated odds ratios ranging from 2.6 to 45.4. The dishes had been prepared in different regional kitchens of the catering company and were served in the schools two days before the peaks of the respective outbreaks. All affected institutions had received strawberries of one lot, imported frozen from China. The outbreak vehicle was identified within a week, which led to a timely recall and prevented more than half of the lot from reaching the consumer. This outbreak exemplifies the risk of large outbreaks in the era of global food trade. It underlines the importance of timely surveillance and epidemiological outbreak investigations for food safety.
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