(NEXSTAR) — An already-expansive recall of frozen waffles and pancake products has been expanded due to potential listeria contamination.

Last week, the FDA announced a limited voluntary recall by TreeHouse Foods of more than 500 varieties of frozen waffles sold across the U.S. and Canada. The waffles were sold under multiple brand names, including Kodiak Cakes and Simple Truth, across more than a dozen retailers across all states.

The FDA reported that the possible presence of listeria bacteria was detected through routine testing at the company’s Brantford, Ontario, factory.

On Tuesday, TreeHouse Foods expanded the voluntary recall to include all the products manufactured at the impacted facility “based on additional testing.” Production was halted and the company said it intends to restart production after taking steps that include “deep cleaning, sanitation, hygienic restoration” and other procedures.

The newest products, listed below, are still within their shelf-life. To determine if your product is impacted, you’ll need to check the UPC and the best-by dates.

You can find the list of products recalled by TreeHouse Foods last week here.

If your frozen waffles or pancakes match the details above, TreeHouse Foods says to throw them away or return them to your store for credit. If you have any questions, you can contact TreeHouse Foods at 1-800-596-2903, Monday – Friday, 8:00 a.m. – 4:30 p.m. (CST).

As of Tuesday, no illnesses have been linked to the recalled products.

Listeria infections can cause mild illness including fever and diarrhea or more serious problems. The illness is most dangerous to pregnant women, newborns, adults over 65 and people with weakened immune systems, according to the U.S. Centers for Disease Control. Symptoms can take up to 10 weeks to appear.

The CDC estimates that 1,600 people are infected with listeria each year in the United States and 260 die.

This is the third large U.S. recall in recent months of foods potentially contaminated with listeria, a hardy bacteria that can be difficult to eradicate.

In July, Boar’s Head Provision Co. Inc. of Sarasota, Florida, recalled more than 7 million pounds of deli meat and shut down its plant in Jarratt, Virginia, after deli meat contaminated with listeria led to at least 10 deaths and nearly 50 hospitalizations.

This month Oregon-based BrucePac recalled nearly 12 million pounds of meat and poultry processed at an Oklahoma plant after routine testing detected listeria.

The Associated Press contributed to this report.