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Food as vehicle for AMR

Abstract

Several individuals reported gastrointestinal symptoms following meals consumed in late January 2021 at a restaurant in western Finland. We conducted a retrospective cohort study and defined a case as a person who ate at the lunch restaurant between 27 and 29 January 2021 and had stomach pain, vomiting or diarrhoea and/or a laboratory-confirmed Typhimurium infection within 2 weeks after the exposure. We collected faecal and food samples for microbiological analysis. isolates were characterised in detail using whole genome sequencing (WGS) and cluster analysis by core genome multilocus sequence typing (cgMLST). Altogether, 393 meals were sold and 101 people (who ate 142 meals) participated in the cohort study. There were 49 cases; 23 were laboratory-confirmed infections with a multidrug-resistant Typhimurium. The Typhimurium isolates from cases and frozen tomato cubes used uncooked in salads were closely related and clustered together in cgMLST comparison. These salads were consumed by 76% of the cases. Based on the cgMLST clustering, they were the suggested source of the outbreak. Statistical association was not significant between eating the salads and being a case. Following the outbreak investigation, the producer decided to recommend cooking of their frozen tomato products before consumption.

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/content/10.2807/1560-7917.ES.2022.27.41.2200316
2022-10-13
2024-12-23
/content/10.2807/1560-7917.ES.2022.27.41.2200316
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Salmonella Typhimurium outbreak associated with frozen tomato cubes at a restaurant in western Finland, January to February 2021
<p class="citation"> <span>Citation style for this article:</span> <span class="meta-value authors"> <a href="/search?value1=Sohvi+K%C3%A4%C3%A4ri%C3%A4inen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Kääriäinen Sohvi</a>, <a href="/search?value1=Doroth%C3%A9e+Obach&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Obach Dorothée</a>, <a href="/search?value1=Dafni+Katerina+Paspaliari&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Paspaliari Dafni Katerina</a>, <a href="/search?value1=Marjut+Tofferi&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Tofferi Marjut</a>, <a href="/search?value1=Arto+Nieminen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Nieminen Arto</a>, <a href="/search?value1=Annika+Pihlajasaari&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Pihlajasaari Annika</a>, <a href="/search?value1=Henry+Kuronen&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Kuronen Henry</a>, <a href="/search?value1=Anni+Vainio&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Vainio Anni</a>, <a href="/search?value1=Ruska+Rimhanen-Finne&option1=author&noRedirect=true" class="nonDisambigAuthorLink">Rimhanen-Finne Ruska</a></span>. Salmonella Typhimurium outbreak associated with frozen tomato cubes at a restaurant in western Finland, January to February 2021. <a href="/content/ecdc">Euro Surveill.</a> 2022;27(41):pii=2200316. <a href="https://doi.org/10.2807/1560-7917.ES.2022.27.41.2200316" title="doi link" target="_blank">https://doi.org/10.2807/1560-7917.ES.2022.27.41.2200316</a> <span class="ES_Article_citation"> <span class="generated">Received</span>: 01 Apr 2022;&nbsp;&nbsp; <span class="generated">Accepted</span>: 21 Sept 2022 </span> </p>
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