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Article Abstract

In May 2017, whole-genome sequencing (WGS) became the primary subtyping method for in Canada. As a result of the increased discriminatory power provided by WGS, 16 multi-jurisdictional outbreaks of associated with frozen raw breaded chicken products were identified between 2017 and 2019. The majority (15/16) were associated with , while the remaining outbreak was associated with Heidelberg. The 16 outbreaks included a total of 487 cases with ages ranging from 0 to 98 years (median: 24 years); 79 hospitalizations and two deaths were reported. Over the course of the outbreak investigations, 14 frozen raw breaded chicken products were recalled, and one was voluntarily withdrawn from the market. After previous changes to labelling and the issuance of public communication for these products proved ineffective at reducing illnesses, new industry requirements were issued in 2019, which required the implementation of measures at the manufacturing/processing level to reduce to below detectable amounts in frozen raw breaded chicken products. Since implementation, no further outbreaks of associated with frozen breaded chicken have been identified in Canada, a testament to the effectiveness of these risk mitigation measures.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11696595PMC
http://dx.doi.org/10.1017/S0950268824001705DOI Listing

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Article Synopsis
  • In May 2017, whole-genome sequencing became the main method for identifying bacterial strains in Canada, leading to the discovery of 16 multi-jurisdictional outbreaks linked to frozen raw breaded chicken products between 2017 and 2019.
  • Of the 487 reported cases, there were 79 hospitalizations and 2 deaths, mainly involving individuals with a median age of 24 years, with the majority of outbreaks linked to a specific bacterial strain.
  • Following ineffective prior measures, new regulations were introduced in 2019 to enforce manufacturing practices aimed at reducing bacteria levels, and since their implementation, no further outbreaks related to these products have occurred in Canada.
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Estimated reduction in human salmonellosis incidence in Canada from a new government requirement to reduce in frozen breaded chicken products.

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Nontyphoidal infections are a leading cause of enteric disease in Canada, most commonly associated with foodborne exposures. Raw frozen breaded chicken products (FBCP) have been implicated in 16 outbreaks between 2017 and 2019. This study quantified the impact of the 1 April 2019 requirement by the Canadian Food Inspection Agency (CFIA) for manufacturers to reduce in raw FBCP.

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