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

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.