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Lessons learned from a Salmonella enteritidis phage type 4 outbreak in Austria, 2005.
J Food Prot. 2007 Jan; 70(1):35-9.JF

Abstract

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.

Authors+Show Affiliations

Austrian Agency for Health and Food Safety, Vienna, Austria.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17265857

Citation

Schmid, Daniela, et al. "Lessons Learned From a Salmonella Enteritidis Phage Type 4 Outbreak in Austria, 2005." Journal of Food Protection, vol. 70, no. 1, 2007, pp. 35-9.
Schmid D, Luckner-Hornischer A, Holzhammer G, et al. Lessons learned from a Salmonella enteritidis phage type 4 outbreak in Austria, 2005. J Food Prot. 2007;70(1):35-9.
Schmid, D., Luckner-Hornischer, A., Holzhammer, G., Rokita, D., Federspiel, M., Lassnig, H., Pichler, A. M., Lederer, I., Beranek, A., Kornschober, C., Berghold, C., & Allerberger, F. (2007). Lessons learned from a Salmonella enteritidis phage type 4 outbreak in Austria, 2005. Journal of Food Protection, 70(1), 35-9.
Schmid D, et al. Lessons Learned From a Salmonella Enteritidis Phage Type 4 Outbreak in Austria, 2005. J Food Prot. 2007;70(1):35-9. PubMed PMID: 17265857.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Lessons learned from a Salmonella enteritidis phage type 4 outbreak in Austria, 2005. AU - Schmid,Daniela, AU - Luckner-Hornischer,Anita, AU - Holzhammer,Gerda, AU - Rokita,Dietmar, AU - Federspiel,Martin, AU - Lassnig,Heimo, AU - Pichler,Anna-Margareta, AU - Lederer,Ingeborg, AU - Beranek,Andreas, AU - Kornschober,Christian, AU - Berghold,Christian, AU - Allerberger,Franz, PY - 2007/2/3/pubmed PY - 2007/2/28/medline PY - 2007/2/3/entrez SP - 35 EP - 9 JF - Journal of food protection JO - J Food Prot VL - 70 IS - 1 N2 - 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. SN - 0362-028X UR - https://www.unboundmedicine.com/medline/citation/17265857/Lessons_learned_from_a_Salmonella_enteritidis_phage_type_4_outbreak_in_Austria_2005_ L2 - https://meridian.allenpress.com/jfp/article-lookup/doi/10.4315/0362-028x-70.1.35 DB - PRIME DP - Unbound Medicine ER -