The FDA has classified its recall of eggs sold under Costco's Kirkland brand as a Class I recall, a designation reserved for instances of the highest potential health risk — including death.

The Food and Drug Administration (FDA) has issued a new warning about thousands of recalled eggs sold at Costco (COST) stores due to potential contamination with salmonella, a bacterium that can cause serious infections. The recall has been elevated to the FDA’s highest risk level.

STATEN ISLAND, N.Y. -- The Food and Drug Administration has classified a recall of eggs sold at Costco as the highest risk level due to potential salmonella contamination. The agency updated it to Class I over “a reasonable probability” that it “will cause serious adverse health consequences or death.”