The Food and Drug Administration announced this week that an ice cream manufacturer has issued a voluntary recall of its chocolate-coated vanilla ice cream bars and orange cream bars due to a possible listeria discovery.

The recent announcement states that the products in question were produced in 2017 with “best by” dates in 2018 at Fieldbrook Foods Corporation’s plant located in Dunkirk, New York. Fieldbrook’s ice cream bars have been sold at a variety of big name retailers, including Aldi, Save a Lot, Winn Dixie, and Dollar Tree. No actual illnesses have been reported at this point, but Fieldbrook Foods issued a voluntary recall when traces of Listeria monocytogenes were found during product testing.

Listeria can cause fever, diarrhea, headaches, stiff neck, confusion, loss of balance, convulsions, and muscle aches, and individuals infected with the Lysteria bacteria can often report symptoms beginning 1 to 4 weeks after consuming contaminated food items, as the Center for Disease Control states, but there have been cases where symptoms have been reported on the same day or up to a month and a half after exposure to the virus.

The Elderly, pregnant women, and people with weakened immune systems should use extreme caution when purchasing and consuming possibly contaminated food items, as the disease can have more serious or fatal effects on them.

The FDA reports that customers who have purchased any of the ice cream bars recently can return them to their original place of purchase for a full refund.