The Phillips Mushroom Farm of Kennett Square, Pa. released a statement yesterday announcing that its enoki mushrooms, distributed all across the United States and Canada over the past month, could be contaminated with Listeria monocytogenes.

The mushrooms were sold between January 13 and 30, and according to the company’s statement, they were packed in clear plastic bags with blue, red or green graphics panels, plastic tills wrapped with ilm or one pound bags for food service.

Listeria monocytogenes can lead to listeriosis, which is an uncommon but potentially fatal disease, most dangerous to people with weakened immune systems, such as the elderly and infants. It is considered significantly more dangerous than Samonella and its symptoms include fever, diarrhea, vomiting, lethargy and difficult breathing.

The company recalled the 1-pound, 3.5-ounce and 4-ounce packages of the mushrooms. Consumers are asked by the company and by the Centers for Disease Control and Prevention to return the mushrooms to the place of purchase for a full refund and retailers are asked to immediately remove the above mentioned products from their shelves.

“We are naturally concerned with continuing to ensure the satisfaction and safety of our consumers,” explained Phillips General Manager Jim Angelucci in a news release, adding that “Our actions are intended to remove all potentially harmful products and eliminate any associated risks.” The recall notice is also presented on the company’s Web site and there is also a phone number available from the Phillips Mushroom Farms (1-800-722-8818) where customers can ask any question related to the issue.