Reser's Fine Foods, Inc., has voluntarily expanded a recall of packaged salads from its factory in Topeka, Kan.
The company based in Beaverton, Ore., said it took the step Saturday because the products distributed nationwide and in Canada may be contaminated with Listeria, which can cause serious illness. Symptoms include fever, headache, abdominal pain and diarrhea.
The company said in a statement on its website that there have been no confirmed illnesses linked to the products.
The products include potato, pasta, tuna and egg salads sold under the Reser's name, as well as a variety of others.
Reser's said the packages are marked with a plant identifier code of 20 next to the best-by-date. About 450 products are listed on the Resers.com website.