Nestle USA Inc. is recalling its ice cream drumsticks in 16-count variety packs and individually wrapped 24-count vanilla packs produced in Bakersfield, California, for contamination by Listeria monocytogenes.

Nestle said no other production codes are involved.

The recall notice posted Friday on the  U.S. Food and Drug Administration website said the manufacturing lines for the 4.6 fluid ounce cones tested positive for Listeria although no contamination has been found in the treats themselves. The ice cream cones were distributed nationwide. No illnesses have been reported.

The recall is being initiated as a precautionary action, the recall notice said.

On its website, Nestle said the product was accidentally shipped despite the positive result and a program that requires product to be held until testing is completed. Nestle said it is taking steps to improve the process.

Listeria monocytogenes can cause sometimes fatal invections in young children, the frail and the elderly with weakened immune systems. Symptoms include high fever, severe headache, stiffness, nausea, abdominal pain and diarrhea. It also can cause miscarriages and stillbirths among pregnant women. Symptoms can take as long as 70 days to develop.

The recalled items best use dates between June 2 and June 19, 2017 and carry the UPC codes 72554-11096 or 72554-00160. The production codes recalled are: 6244580212 , 6245580212, 6246580212, 6247580212, 6248580212, 6249580212, 6250580212, 6251580212, 6252580212, 6253580212, 6254580212, 6255580212, 6256580212, 6257580212, 6258580212, 6259580212, 6260580212 and 6261580212.

Consumers are advised to return the ice cream cones to place of purchase or contact Nestle Consumer Services for replacement. Nestle can be reached at 800-681-1676 or by email ,

The Nestle recall follows last month’s recall of Blue Bell half-gallons and pints of Chocolate Chip Cookie Dough and Cookie Two Step ice cream products produced in Sulacauga, Alabama.

Nestle said its recall differed in five ways:

“(1) we have received no reports of human illnesses; (2) we have no listeria findings in the ice cream itself (just the equipment); (3) we have only one product line affected; (4) we have only one facility affected; and (5) we self-identified this event and took precautionary steps to recall product,” Nestle said.