Asda has issued an urgent warning to recall its Cranberry and Nut Cereal Bars due to the risk of the illness.
Food can be contaminated with the bacteria at any stage during the production process, the processing of the food itself and while cooking.
The cereal bars affected are those in the pack size of 4x35g with the best before end date of September 2019.
The supermarket chain has issued the precautionary recall and advised customers who have bought the product not to eat it.
