Outbreak of Listeriosis Associated with Consumption of Packaged Salad

Leafy green vegetables were not included in the questionaries’ as a source for the infections.

The Public Health Agency of Canada collaborated the CDC and FDA to investigate an outbreak of Listeria monocytogenes infections linked to Dole and PC Organics packaged salad products produced from a US processing facility in Springfield, Ohio. Given that the source of the outbreak was identified and contaminated products have been recalled from the market the outbreak investigation coordinating committee has been deactivated and the investigation is coming to a close.
Laboratory results from the Canadian Food Inspection Agency (CFIA) confirmed a link between recalled packaged salad products and the outbreak of listeriosis in five provinces. Laboratory testing and analysis with PFGE completed by the Public Health Agency has confirmed that the Canadian and US Listeria outbreaks are highly genetically related. 
On Friday, January 22, CFIA issued a food recall warning advising Canadians of the recall to Dole and PC Organics packaged salad products under various product names that were distributed in eastern provinces.
Listeria is a type of bacteria that can be found in food, soil, plants, sewage and other places in nature. Eating food with Listeria on it can cause a serious disease, called listeriosis, in high-risk groups.
In total, there were 14 cases of Listeria monocytogenes in five provinces related to this outbreak: Ontario (9), Quebec (2), New Brunswick (1), Prince Edward Island (1), and Newfoundland and Labrador (1).
Individuals became sick between May 2015 and February 2016. The majority of Canadians cases (64%) were female, with an average age of 78 years. All cases have been hospitalized, and three people have died, however it has not been determined if Listeria contributed to the cause of these deaths.
Source: http://www.fda.gov/Food/RecallsOutbreaksEmergencies/Outbreaks/ucm482807.htm