The United States Department of Agriculture (USDA) announced Wednesday that the Marketside Extra Large Supreme 16-inch pizza, produced by RBR Meat company, is being recalled after the manufacturer conducted a routine sampling and concluded that the pizza may be contaminated with Listeria monocytogenes. Currently, there haven’t been any reported cases of the illness.

The recalled pizzas were produced on Feb. 23. They are shrink-wrapped, and found inside a 50.6 ounce box that’s labeled as “Marketside Extra Large Supreme Pizza.” The lot code is 20547. According to the USDA, they were shipped to retail distribution centers in California, Nevada, Utah, and Washington.

Symptoms of listeria include muscle aches, headache, stiff neck, confusion, loss of balance, and convulsions, and diarrhea. Pregnant women are especially at risk—according to the USDA, the infection can cause miscarriages, stillbirths, premature delivery, and life-threatening infections for a baby. Those who are older or have a weakened immune system are also highly susceptible.

If you believed you purchased one of the possibly contaminated pizzas, the USDA encourages you to either throw it away or return it to the place of purchase. Anyone with further questions can call RBR Meat Company at 323-826-2144 Ext. 190.