One week after a company began notifying customers in 34 states about potential Listeria contamination in hard-cooked eggs, the Food and Drug Administration announced that Michael Foods, Inc. is expanding its recall of certain hard-cooked eggs.

Michael Foods said it was widening the initial call back for three lot dates, announced January 26 after lab testing revealed that some of the eggs may have been contaminated with Listeria monocytogenes.

Additional lot dates have been added, the company said, because of new evidence that a repair project in its Wakefield, Nebraska packaging room “was the likely source of the contamination.”

While Michael Foods said its eggs were not sold directly to retailers or consumers, the company acknowledged that food distributors and manufacturers who purchased the eggs could have used them in products sold to retail outlets, or used them in food service settings.

A number of retailers subsequently announced their own recalls in connection with the Michael Foods recall:

— Super1Foods is recalling 3 lb. Deli Fresh Gourmet Mustard Potato Salad, batch 3/19/12 and UPC 00718129010038 because it contains hard-cooked eggs recalled by Michael Foods.

— Brookshire’s Food & Pharmacy is recalling  Brookshire’s Brand 1 lb Southern Mustard Potato Salad (batch 3/19/12 and UPC 00092825145257); Deli Fresh Gourmet Mustard Potato Salad 3 lb (batch 3/19/12 and UPC 00718129010038); and Brookshire’s Brand 3 lb Southern Mustard Potato Salad (batch 3/19/12 and UPC 00092825145219).

— Kroger is recalling 5 lb. Deli Country Potato Salad, RW and Bakers Country Potato Salad in Dillons, Baker’s, Gerbes and Food4Less Fremont stores.

— 18th Street Deli of Hamtramck, MI, earlier recalled about 118 pounds of julienne salad products that include turkey, ham and hard-cooked eggs distributed to retail stores in Michigan and vending companies in Indiana, Michigan and Ohio.

There have been “no confirmed reports of illness,” Michael Foods said in its news release.

The recalled eggs were purchased by food distributors and manufacturers located in 34 states (AL, AR, AZ, CA, CO, FL, GA, IA, IL, IN, KS, KY, LA, MI, MN, MO, MS, MT, NC, ND, NE, NJ, NV, OH, OK, OR, PA, SC, TN, TX, UT, WA, WI, WV).

The Michael Foods recall is limited to 10- and 25-pound pails of hard-cooked eggs in brine produced at the Wakefield facility, and labeled under six brand names: Columbia Valley Farms, GFS, Glenview Farms, Papetti’s, Silverbrook and Wholesome Farms.

The recalled eggs bear lot codes of 1 LOT 1350W through 1 LOT 2025W and expiration dates ranging from 1/30/2012 to 3/10/2012
. Only lot codes immediately preceded by a “1” and ending in a “W” are being recalled.

Michael Foods said it has taken a number of corrective steps to address the issue and prevent recurrence of the problem.

For more information, call Michael Foods at 877-367-3447, Monday through Friday, 8 a.m. to 5 p.m. EST.