Freeze-dried fruit packs sold at Sam’s Club are being recalled in 43 states due to possible listeria contamination. Customers urged not to eat them.

Doehler Dry Ingredient Solutions, LLC is recalling some 15-count boxes of “Member’s Mark Freeze Dried Fruit Variety Pack” after internal testing found the presence of Listeria monocytogenes, the U.S. Food and Drug Administration (FDA) said. No illnesses have been reported so far.

Listeria monocytogenes [is] an organism which can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened immune systems," the FDA said.