As of August 23 2019, there have been seven confirmed cases of Listeria monocytogenes illness in three Canadian provinces: British Columbia (1), Manitoba (1) and Ontario (5) linked to cooked Rosemount brand cooked diced chicken.
The Public Health Agency of Canada notes Rosemount cooked diced chicken was supplied to institutions (including cafeterias, hospitals and nursing homes) where many of the individuals who became sick resided, or visited, before becoming ill.
Individuals became sick between November 2017 and June 2019. Six individuals have been hospitalized. Individuals who became ill are between 51 and 97 years of age. The majority of cases (86%) are female.
The collaborative outbreak investigation was initiated because of an increase of Listeria illnesses that were reported in June 2019. Through the use of a laboratory method called whole genome sequencing, two Listeria illnesses from November 2017 were identified to have the same genetic strain as the illnesses that occurred between April and June 2019. It is possible that more recent illnesses may be reported in the outbreak because of the period of time it takes between when a person becomes ill and when the illness is reported to public health officials. In national Listeria monocytogenes outbreak investigations, the reporting time period is usually between four and six weeks.
The U.S. CDC is also investigating an outbreak of Listeria illnesses occurring in several states. The type of Listeria identified in the U.S. is closely related genetically (by whole genome sequencing) to the Listeria making people sick in Canada. Canada and U.S. public health and food safety partners are collaborating on these ongoing Listeria investigations.
CDC is not recommending that consumers avoid any particular food at this time. Restaurants and retailers are not advised to avoid serving or selling any particular food. We will update our advice if a source is identified.
Latest Outbreak Information
At A Glance
24 people infected with the outbreak strain of Listeria monocytogeneshave been reported from 13 states.
Of 23 ill people with information available, 22 hospitalizations have been reported.
Two deaths have been reported.