The 454 gram and 1.25 kilogram containers of Reser’s brand Cheesy Macaroni Salad dated Oct. 20, 2013 with UPC codes 0 71117 18241 5 and 0 71117 61227 1, respectively, are being recalled.
These products have been distributed in Wal-Mart stores located in Ontario, New Brunswick and Nova Scotia, as well as nationally in Loblaw stores.
The Canadian Food Inspection Agency said there have been no illnesses reported.
The CFIA said food contaminated with Listeria monocytogenes may not look or smell spoiled.
Symptoms of listeriosis include high fever, severe headache, neck stiffness and nausea. Pregnant women, the elderly and people with weakened immune systems are considered to be at higher risk.