Cold smoked salmon sold at Sam’s Club stores in 42 states, including Hawaii, is being recalled after concerns of listeria contamination surfaced.

Miami-based Multiexport Foods, Inc. issued the voluntary recall after a routine lab test on an undistributed shipment of the fish found the listeria monocytogenes bacteria, according to a Wal-Mart news release.

No illnesses have been linked to the recall, which is “being issued with an over abundance of caution,” Wal-Mart said.

The listeria bacteria can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened immune systems.

The recall includes 12-ounce twin packs, which have two 6-ounce vaccuum-sealed packages in a cardboard sleeve, and 1.25-pound packs of the salmon sold under the “Paramount Preserve” brand. Affected products were distributed to Sam’s Club stores between Nov. 12 and Dec. 21.

Wal-Mart said consumers can return the salmon to retailers for a full refund.

The UPC code for the twin pack is 6 88264 86705 0 while the code for the 1.25-pound pack is 6 88264 86664 0.