Document Detail

Lessons learned from a Salmonella enteritidis phage type 4 outbreak in Austria, 2005.
MedLine Citation:
PMID:  17265857     Owner:  NLM     Status:  MEDLINE    
An outbreak of gastroenteritis due to Salmonella Enteritidis phage type 4 occurred in people who attended a traditional hunting festivity in a small village in western Austria 6 through 11 November 2005. Of approximately 250 attendees, 227 had consumed dishes offered at the festival, and of these consumers 35 persons fulfilled the outbreak case definition (attack rate of 15.4%). Spätzle (traditional pastalike side dish) was most likely the contaminated part of the incriminated main course (relative risk of 18.9, 95% confidence interval of 4.6 to 76.7; P < 0.001). Thirteen eggs that remained from the preparation of the spätzle were negative for Salmonella when tested individually without shell disinfection, as were 1200 eggs collected at the egg production plant and examined with shell disinfection. The back-traced egg production farm had been initially certified as Salmonella free by a voluntary quality control program. However, an intensified environmental investigation of the incriminated egg production farm performed in the first quarter of 2006 and based on an appropriate method of sampling revealed Salmonella Enteritidis phage type 4 in 4 of 13 flocks. Although a combination of epidemiological and microbiological investigations allowed elucidation of the mode of spread, no restrictions were placed on the incriminated flocks of laying hens. These flocks were kept in production until they were stalled out due to age in August 2006. In June 2006, a cluster of 23 cases of Salmonella Enteritidis phage type 6 infection was again associated with this egg production farm. Evidence provided by epidemiological analyses is often disregarded by decision makers. However, negative results from microbiological testing of food involved in an outbreak are often weighted as strong evidence against a causal association between that food and the outbreak.
Daniela Schmid; Anita Luckner-Hornischer; Gerda Holzhammer; Dietmar Rokita; Martin Federspiel; Heimo Lassnig; Anna-Margareta Pichler; Ingeborg Lederer; Andreas Beranek; Christian Kornschober; Christian Berghold; Franz Allerberger
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of food protection     Volume:  70     ISSN:  0362-028X     ISO Abbreviation:  J. Food Prot.     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2007-02-01     Completed Date:  2007-02-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  35-9     Citation Subset:  IM    
Austrian Agency for Health and Food Safety, Vienna, Austria.
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MeSH Terms
Austria / epidemiology
Child, Preschool
Cohort Studies
Disease Outbreaks
Eggs / microbiology*
Food Contamination / analysis*
Food Microbiology
Gastroenteritis / epidemiology*,  microbiology
Middle Aged
Retrospective Studies
Salmonella Food Poisoning / epidemiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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