(WJW) — Dole Fresh Vegetables, Inc. is adding more products to its voluntary recall of packaged salads linked to a listeria outbreak.

Dole issued a recall in December after two people died and 16 people were infected with listeria linked to its salads.

According to the Food and Drug Administration, Listeria monocytogenes is a bacterium that can cause serious and sometimes fatal infections in young children, frail or elderly people as well as others with weakened immune systems. Listeria infection can also cause pregnant women to have miscarriages and stillbirths.

Symptoms include high fever, severe headache, stiffness, nausea, abdominal pain and diarrhea. About 1,600 people contract listeriosis each year and about 260 die, according to the Centers for Disease Control and Prevention.

The expanded recall includes all Dole-branded and private label packaged salads containing iceberg lettuce that was processed at its Springfield, Ohio, and Soledad, California, production facilities.

Equipment used to harvest iceberg lettuce tested positive for listeria, according to Dole.

No illnesses have been reported with the new recall, but people who have any of the products are urged to throw them out immediately.

The recalled products were sold in more than two dozen states and have a “Best if Used By” date between Dec. 22, 2021, and Jan. 9, 2022.

Below is the full list of recalled products.

LISTING OF PRODUCTS SUBJECT TO SOLEDAD RECALL

LISTING OF PRODUCTS SUBJECT TO SPRINGFIELD RECALL

If you have questions about the recall, contact the Dole Consumer Response Center at 1-800-356-3111, Monday through Friday, 8 a.m. to 3 p.m.