PMID: 29770042Jan 5, 2017Paper

Outbreak of Salmonella Reading in persons of Eastern Mediterranean origin in Canada, 2014-2015

Canada Communicable Disease Report = Relevé Des Maladies Transmissibles Au Canada
F TanguaySalmonella Reading Investigation Team

Abstract

Salmonella Reading (S. Reading) is a rare serotype of Salmonella subspecies (spp.) in Canada with less than nine cases reported each year (2011-2013). An increase in S. Reading was identified in several Canadian provinces in early 2015, prompting the initiation of a national outbreak investigation. To describe a multi-provincial S. Reading outbreak in Canada that affected over 30 people. Cases were defined as laboratory-confirmed S. Reading with related pulsed-field gel electrophoresis (PFGE) patterns. Onset dates were between November 2014 and September 2015.​: Early in the investigation, investigators noted cases were predominantly of Eastern Mediterranean origin, mainly Afghan and Lebanese and many of those affected had consumed food items not typically captured on standard enteric outbreak hypothesis-generating questionnaires. An open-ended three day food consumption survey was conducted with a convenience sample of community informants to better understand food preferences of the affected ethnocultural populations. Results of the survey were used to design a focused questionnaire for case re-interviews and subsequent outbreak cases. Public health investigators obtained food samples from case homes and relevant food premise...Continue Reading

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