Tyson Foods, Inc. has recalled approximately 8,492,832 pounds of its frozen fully-cooked chicken products such as chicken strips and diced chicken, and products made with fully cooked chicken due to possible contamination with Listeria.

According to the U.S. Department of Agriculture (USDA) Food Safety and Inspection Service (FSIS), the recall includes frozen, fully cooked, ready-to-eat chicken products that were produced between December 26, 2020, and April 13, 2021.

Ready-to-eat chicken is typically food that can be eaten without additional cooking being necessary. In their announcement on Saturday, the USDA FSIS provided a list of the specific products being recalled and pictures of their labels. Check for the establishment number “EST. P-7089” which may be somewhere on the product bag or within the USDA mark of inspection as well.

The chicken was shipped nationwide to retailers and institutions including hospitals, nursing facilities, restaurants, schools and Department of Defense locations

Products were sold under many brands including Tyson, Jet’s Pizza, Casey’s General Store, Marco’s Pizza, and Little Caesars.

The Food Safety and Inspection Service (FSIS) said it received a notification on June 9 of two people who became ill with listeriosis, and worked with the Centers for Disease Control and Prevention and state public health agencies to determine there was evidence linking the illnesses to Tyson pre-cooked chicken products.

“Listeriosis can cause fever, muscle aches, headache, stiff neck, confusion, loss of balance and convulsions sometimes preceded by diarrhea or other gastrointestinal symptoms,” the FSIS statement said.

Consumers and businesses or institutions that may have these products should throw them away or return them to the store where they were purchased, the agency said.