This story incorporates reporting fromConsumerAffairs, AOL, BlackDoctor, Eat This%2c Not That! and KHQ.The Food and Drug Administration (FDA) has elevated the recall status of Kirkland Signature Smoked Salmon products sold at Costco to a Class I,

Salmon that was sold at Costco and recalled in October is now under a Class I recall. Acme Smoked Fish Corporation recalled 111 cases of Kirkland Signature Smoked Salmon when a lab found it had been contaminated with Listeria, the Food and Drug Administration said in October.

The FDA has upgraded the Kirkland smoked salmon recall to Class 1, citing potential listeria contamination that could cause severe illness or death.