Costco is recalling smoked salmon products over possible listeria contamination. Listeria is a bacteria that contaminates foods and can cause listeriosis, which is the third-leading cause of death from foodborne illness in the US. Listeria can spread in food processing facilities, according to the US Center for Disease Controls and Prevention.

A major recall of nearly 12 million pounds of meat and poultry that may have been contaminated with listeria has affected stores nationwide