One of the products recalled by Dats Deli European due to listeria concerns. (Canadian Food Inspection Agency)

Sliced meat products from Dats Deli European of Montreal are being voluntarily recalled by the company due to Listeria contamination.

According to the Canadian Food Inspection Agency, food contaminated with Listeria monocytogenes may not look or smell spoiled but can cause serious illness.

Symptoms of listeriosis include high fever, severe headache, neck stiffness and nausea.

Pregnant women, the elderly and those with weakened immune systems are at the greatest risk.

The recalled products were sold in Quebec and Ontario and include.

• Dats Deli Black Forest Ham, best before July 23
• Dats Deli Cooked Turkey Breast, best before July 23
• Dats Deli Old Fashioned Smoked Meat, best before July 10
• Dats Deli Old Fashioned Smoked Meat, best before July 23
• Dats Deli Old-Fashioned Smoked Meat, best before Aug. 5
• Dats Deli Roast Pork, best before July 16
• Dats Deli Seasoned Roast Beef, best before July 16
• Le Biftheque Old-Fashioned Smoked Meat, best before July 16
• Le Biftheque Old-Fashioned Smoked Meat, best before July 23

Anyone who has purchased any of these products, should return them to the point of sale.