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An outbreak of Salmonella Enteritidis phage type 34a infection associated with a Chinese restaurant in Suffolk, United Kingdom

BACKGROUND: On 30(th )July 2002, the Suffolk Communicable Disease Control Team received notifications of gastrointestinal illness due to Salmonella Enteritidis in subjects who had eaten food from a Chinese restaurant on 27(th )July. An Outbreak Control Team was formed resulting in extensive epidemio...

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Autores principales: Badrinath, Padmanabhan, Sundkvist, Torbjorn, Mahgoub, Hamid, Kent, Richard
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2004
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC516780/
https://www.ncbi.nlm.nih.gov/pubmed/15341665
http://dx.doi.org/10.1186/1471-2458-4-40
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author Badrinath, Padmanabhan
Sundkvist, Torbjorn
Mahgoub, Hamid
Kent, Richard
author_facet Badrinath, Padmanabhan
Sundkvist, Torbjorn
Mahgoub, Hamid
Kent, Richard
author_sort Badrinath, Padmanabhan
collection PubMed
description BACKGROUND: On 30(th )July 2002, the Suffolk Communicable Disease Control Team received notifications of gastrointestinal illness due to Salmonella Enteritidis in subjects who had eaten food from a Chinese restaurant on 27(th )July. An Outbreak Control Team was formed resulting in extensive epidemiological, microbiological and environmental investigations. METHODS: Attempts were made to contact everybody who ate food from the restaurant on 27(th )July and a standard case definition was adopted. Using a pre-designed proforma information was gathered from both sick and well subjects. Food specific attack rates were calculated and two-tailed Fisher's exact test was used to test the difference between type of food consumed and the health status. Using a retrospective cohort design univariate Relative Risks and 95% Confidence Intervals were calculated for specific food items. RESULTS: Data was gathered on 52 people of whom 38 developed gastrointestinal symptoms; 16 male and 22 female. The mean age was 27 years. The mean incubation period was 30 hours with a range of 6 to 90 hours. Food attack rates were significantly higher for egg, special and chicken fried rice. Relative risk and the Confidence interval for these food items were 1.97 (1.11–3.48), 1.56 (1.23–1.97) and 1.48 (1.20–1.83) respectively. Interviews with the chef revealed that many eggs were used in the preparation of egg-fried rice, which was left at room temperature for seven hours and was used in the preparation of the other two rice dishes. Of the 31 submitted stool specimens 28 tested positive for S Enteritidis phage type 34a and one for S Enteritidis phage type 4. CONCLUSION: In the absence of left over food available for microbiological examination, epidemiological investigation strongly suggested the eggs used in the preparation of the egg-fried rice as the vehicle for this outbreak. This investigation highlights the importance of safe practices in cooking and handling of eggs in restaurants.
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spelling pubmed-5167802004-09-12 An outbreak of Salmonella Enteritidis phage type 34a infection associated with a Chinese restaurant in Suffolk, United Kingdom Badrinath, Padmanabhan Sundkvist, Torbjorn Mahgoub, Hamid Kent, Richard BMC Public Health Research Article BACKGROUND: On 30(th )July 2002, the Suffolk Communicable Disease Control Team received notifications of gastrointestinal illness due to Salmonella Enteritidis in subjects who had eaten food from a Chinese restaurant on 27(th )July. An Outbreak Control Team was formed resulting in extensive epidemiological, microbiological and environmental investigations. METHODS: Attempts were made to contact everybody who ate food from the restaurant on 27(th )July and a standard case definition was adopted. Using a pre-designed proforma information was gathered from both sick and well subjects. Food specific attack rates were calculated and two-tailed Fisher's exact test was used to test the difference between type of food consumed and the health status. Using a retrospective cohort design univariate Relative Risks and 95% Confidence Intervals were calculated for specific food items. RESULTS: Data was gathered on 52 people of whom 38 developed gastrointestinal symptoms; 16 male and 22 female. The mean age was 27 years. The mean incubation period was 30 hours with a range of 6 to 90 hours. Food attack rates were significantly higher for egg, special and chicken fried rice. Relative risk and the Confidence interval for these food items were 1.97 (1.11–3.48), 1.56 (1.23–1.97) and 1.48 (1.20–1.83) respectively. Interviews with the chef revealed that many eggs were used in the preparation of egg-fried rice, which was left at room temperature for seven hours and was used in the preparation of the other two rice dishes. Of the 31 submitted stool specimens 28 tested positive for S Enteritidis phage type 34a and one for S Enteritidis phage type 4. CONCLUSION: In the absence of left over food available for microbiological examination, epidemiological investigation strongly suggested the eggs used in the preparation of the egg-fried rice as the vehicle for this outbreak. This investigation highlights the importance of safe practices in cooking and handling of eggs in restaurants. BioMed Central 2004-09-01 /pmc/articles/PMC516780/ /pubmed/15341665 http://dx.doi.org/10.1186/1471-2458-4-40 Text en Copyright © 2004 Badrinath et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an open-access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Badrinath, Padmanabhan
Sundkvist, Torbjorn
Mahgoub, Hamid
Kent, Richard
An outbreak of Salmonella Enteritidis phage type 34a infection associated with a Chinese restaurant in Suffolk, United Kingdom
title An outbreak of Salmonella Enteritidis phage type 34a infection associated with a Chinese restaurant in Suffolk, United Kingdom
title_full An outbreak of Salmonella Enteritidis phage type 34a infection associated with a Chinese restaurant in Suffolk, United Kingdom
title_fullStr An outbreak of Salmonella Enteritidis phage type 34a infection associated with a Chinese restaurant in Suffolk, United Kingdom
title_full_unstemmed An outbreak of Salmonella Enteritidis phage type 34a infection associated with a Chinese restaurant in Suffolk, United Kingdom
title_short An outbreak of Salmonella Enteritidis phage type 34a infection associated with a Chinese restaurant in Suffolk, United Kingdom
title_sort outbreak of salmonella enteritidis phage type 34a infection associated with a chinese restaurant in suffolk, united kingdom
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC516780/
https://www.ncbi.nlm.nih.gov/pubmed/15341665
http://dx.doi.org/10.1186/1471-2458-4-40
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