The affected product was sold in Ontario, New Brunswick, Newfoundland and Labrador, and possibly other provinces, in 340 gram packages with a best before date of Feb. 16 2019.
Consumers are advised to either throw the product out or return it to the store where it was purchased.
The CFIA says there have been no reports of illnesses linked to the salad bags.
Symptoms of Listeria infection can include vomiting, nausea, persistent fever, muscle aches, severe headache and neck stiffness. In severe cases the infection can be fatal.
