Bags of frozen vegetables that were sold nationwide are being recalled because they might be contaminated with listeria. The bags of frozen mixed vegetables and sweet corn or just sweet corn were sold at close to four-thousand Kroger and Food Lion grocery stores and supermarkets. The FDA has posted a list of the affected lot numbers on its website. Officials say there haven't been any illnesses tied to the products. The vegetables are products of Seattle-area Twin City Foods. If you have the bags, contact the store about how to get a refund.