A mushroom recall was issued Friday by HH Fresh Trading Corp due to concerns of possible listeria contamination.

The California-based company announced the recall of Taiwan Enoki mushrooms that were distributed in West Virginia to several retail stores and sold on August 20 and 23, with 240 cases for each date.

The mushroom product comes in a 200 gram transparent plastic package with the barcode #4711498860019 on the back.

Although no illnesses have been reported, authorities are urging consumers to throw away the products or return them for a refund.

The potential for contamination was noted after routine testing was conducted by the Food and Drug Administration (FDA) revealed the presence of Listeria monocytogenes in 200 grams of Enoki in October. Meanwhile, mushroom production has since been suspended while the FDA and HH Fresh Trading Corp continue to investigate the source of the problem.

News week contacted the FDA by email for comment.

Listeria is a particularly resistant bacteria that can cause serious health complications, especially in pregnant women, the elderly, newborns and people with weakened immune systems.

According to the United States Centers for Disease Control and Prevention (CDC), listeria is the third leading cause of foodborne illness death in the country and is responsible for approximately 1,600 cases of food poisoning per year in the United States, with approximately 260 deaths. Symptoms of a Listeria infection may appear shortly after exposure or may take up to 10 weeks to appear, making it difficult to trace the source of contamination.

Signs and symptoms vary depending on the person and the site of infection. In most cases, the bacteria stay in the intestine and cause the stereotypical symptoms of food poisoning, such as diarrhea and vomiting. Usually, these symptoms appear within 24 hours of eating contaminated food and last one to three days.

This recall marks the latest listeria-related food safety incident in the United States this year. Previous recalls include frozen waffles and other breakfast products sold in many grocery stores, in which TreeHouse Foods Inc. has expanded its initial recall.

Furthermore, Boar’s Head removed more than 7 million pounds of deli meats in July and BrucePac recalled nearly 12 million pounds of meat and poultry last month. Both cases also stemmed from routine listeria testing.

Fifty-nine hospitalizations and 10 deaths resulted from the listeria outbreak linked to recalled Boar’s Head deli meats, the CDC recently reported.