(NewsNation) — A recall has been issued for a popular dried fruit snack sold at Sam’s Club amid concerns that the packages may be contaminated with Listeria.

The snack is Member’s Mark Freeze Dried Fruit Variety Pack 15-count. The U.S. Food and Drug Administration (FDA) announced the recall by Doehler Dry Ingredient Solutions LLC, in a press release Thursday, noting that no illnesses had been reported yet from the possible Listeria monocytogenes exposure.

According to the FDA, the contamination was discovered by the company during “internal testing of their products.” The potentially affected products were distributed between July 1 – July 25 and were sold at Sam’s Club stores across the U.S. The FDA is advising people not to consume the snack if they purchased it during that window of time.

All of the recalled items have the UPC code 1 93968 50900 2, but have different lot codes and “use by” dates, which can be found on the FDA website.

The recalled fruit snacks were shipped to the following states: Alabama, Arizona, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Indiana, Kansas, Louisiana, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Wisconsin, West Virginia and Wyoming, as well as Puerto Rico.

Listeria monocytogenes can cause serious illness and, in some cases, even death. The most at-risk people are young children, elderly people, and those with weakened immune systems. Exposure among healthy people can lead to symptoms like fevers, nausea and abdominal pain. Health officials warn that listeria can result in miscarriages and stillbirths among pregnant women.

Customers should throw away the product and visit any Sam’s Club for a full refund.