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Abstract

There is a need for innovative methods to investigate outbreaks of food-borne infection linked to produce with a complex distribution network. The investigation of a large outbreak of O157 PT34 infection in the United Kingdom in 2016 indicated that catering venues associated with multiple cases had used salad leaves sourced from one supplier. Our aim was to investigate whether catering venues linked to cases were more likely to have used salad leaves from this supplier. We conducted a matched case–control study, with catering venues as the units of analysis. We compared venues linked to cases to those without known linked cases. We included 43 study pairs and obtained information on salad leaf products received by each venue. The odds of a case venue being supplied with salad leaves by Supplier A were 7.67 times (95% confidence interval: 2.30–25.53) those of control venues. This association provided statistical evidence to support the findings of the other epidemiological investigations undertaken for this outbreak. This is a novel approach which is labour-intensive but which addresses the challenge of investigating exposures to food across a complex distribution network.

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/content/10.2807/1560-7917.ES.2018.23.18.17-00195
2018-05-03
2024-11-21
http://instance.metastore.ingenta.com/content/10.2807/1560-7917.ES.2018.23.18.17-00195
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Novel application of the matched case–control design to compare food supply chains during an Escherichia coli O157 outbreak, United Kingdom, 2016
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Thomas+Inns&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Inns Thomas</a>, <a href="/search?value1=Paul+Cleary&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Cleary Paul</a>, <a href="/search?value1=Nick+Bundle&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Bundle Nick</a>, <a href="/search?value1=Sarah+Foulkes&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Foulkes Sarah</a>, <a href="/search?value1=Ashley+Sharp&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Sharp Ashley</a>, <a href="/search?value1=Lara+Utsi&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Utsi Lara</a>, <a href="/search?value1=Chris+McBrien&option1=author&noRedirect=true" class="nonDisambigAuthorLink">McBrien Chris</a>, <a href="/search?value1=Rehman+Teagle&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Teagle Rehman</a>, <a href="/search?value1=Alison+Waldram&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Waldram Alison</a>, <a href="/search?value1=Chris+Williams&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Williams Chris</a>, <a href="/search?value1=Cathy+McCann&option1=author&noRedirect=true" class="nonDisambigAuthorLink">McCann Cathy</a>, <a href="/search?value1=Rob+Smith&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Smith Rob</a>, <a href="/search?value1=Sepeedeh+Saleh&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Saleh Sepeedeh</a>, <a href="/search?value1=Noel+McCarthy&option1=author&noRedirect=true" class="nonDisambigAuthorLink">McCarthy Noel</a>, <a href="/search?value1=Roberto+Vivancos&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Vivancos Roberto</a>, <a href="/search?value1=Jeremy+Hawker&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Hawker Jeremy</a>, <a href="/search?value1=Valerie+Decraene&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Decraene Valerie</a></span>. Novel application of the matched case–control design to compare food supply chains during an Escherichia coli O157 outbreak, United Kingdom, 2016. <a href="/content/ecdc">Euro Surveill.</a> 2018;23(18):pii=17-00195. <a href="https://doi.org/10.2807/1560-7917.ES.2018.23.18.17-00195" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2018.23.18.17-00195</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 13 Mar 2017;&nbsp;&nbsp; <span class="generated">Accepted</span>: 21 Sept 2017 </span> </p>
/content/10.2807/1560-7917.ES.2018.23.18.17-00195
/content/10.2807/1560-7917.ES.2018.23.18.17-00195
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