More than 16,000 pounds of beef has been recalled over potential E. coli contamination from Walmart stores including locations in Pennsylvania and Maryland.

The U.S. Department of Agriculture on Wednesday announced the recall of meat products produced by Cargill Meat Solutions, a Hazelton, Pennsylvania, company. The raw ground beef items were produced on April 26-27 and shipped to stores nationwide.

Dozens of locations in Pennsylvania and Maryland are listed. No Delaware stores are on the list affected by the recall. A full list of stores that are subject to the recall can be found here.

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The products include ground beef and beef patty products. A list of potentially contaminated products and identifying markings can be found here.

A USDA press statement announcing the recall said there had been no confirmed reports of “adverse reactions” from the recalled products; however, federal officials are concerned that potentially contaminated beef subject to recall could be in peoples’ refrigerators or freezers. Products subject to the recall should be thrown away or returned to the place of purchase, according to the USDA statement.