CINCINNATI – The Kroger Co. expanded its voluntary recall of some ground beef products beyond stores in Michigan and parts of Ohio to its stores in more than 20 states on Wednesday, including such outlets as Fred Meyer and QFC in Oregon. This beef recall includes the North Coast Fred Meyer in Warrenton.

“All the recalled beef has been pulled from our shelves since yesterday (Tuesday),” Jeff Jones, the food department relief assistant, said Wednesday. He said the shelves were also sterilized.

Jones said he has a list of pull dates and product codes for all of the products that were recalled. Customers who may have purchased the products may return them for a full refund.

The nation’s biggest traditional grocer also urged customers to check the ground beef in their refrigerators and freezers for the date by which the product must be sold.

Meat obtained from one of Kroger’s suppliers, Nebraska Beef Ltd., has been linked to illness reported in Michigan and Ohio between May 31 and June 8 caused by the E. coli bacteria.

Nebraska Beef has recalled from wholesalers and other processing companies nearly 532,000 pounds of ground beef produced on five dates between May 16 and June 24.

Kroger said Wednesday that as a precaution it had removed ground beef supplied by Nebraska Beef from its stores, and is expanding the recall to its stores in more than 20 states.

“Ground beef in stores today comes from other suppliers not involved in the recall,” Kroger spokeswoman Meghan Glynn said Wednesday.

The Cincinnati-based company advised customers to look for “sell buy” dates from mid-May through early July on most ground beef products they have previously purchased from its stores and return them.

Kroger initiated the recall June 25 for Kroger stores in Michigan and in central and northern Ohio. The expanded recall includes ground beef sold at Fred Meyer, QFC, Ralphs, Smith’s, Baker’s, King Soopers, City Markets, Hilander, Owen’s, Pay Less and Scott’s in more than 20 states as well.

Kroger said it was recalling ground beef products in plastic foam tray packages wrapped in cellophane or purchased from a service counter at all Fred Meyer and QFC stores between May 21-July 5.

It said it is also recalling ground beef under the “Private Selection Natural” label. Kroger said the “sell-by” dates on that product were listed as July 11 through July 21.

The recall does not include ground beef sold in sealed tubes in one, three or five-pound packages and frozen ground beef patties sold in the frozen food section of its stores.

Kroger is notifying customers about the expanded recall by placing signs in stores in meat departments. It also is using its register receipt notification system.

Symptoms of E. coli infection can include severe stomach cramps, diarrhea, vomiting and fever. Most people recover within 5 to 7 days.

Health officials urge people to thoroughly cook hamburger and, if possible, use a digital thermometer to make sure meat has been heated to at least 160 degrees.

They also recommend that people wash their hands with warm water and soap for at least 20 seconds before and after handling food.