The Food and Drug Administration has classified a recall of eggs sold at Costco caused by potential salmonella contamination as the highest risk level for infection. The voluntary recall last month was of 10,

The Food and Drug Administration escalated its recent recall of eggs sold at Costco to the highest alert level, citing possible salmonella exposure. In November, Costco recalled nearly 260,000 eggs sold under the Kirkland Signature brand in 25 stores nationwide.

A recall on eggs from a New York-based farm sold at Costco stores been raised to the highest risk level due to the risk of severe illness or even death stemming from possible salmonella exposure, federal food regulators said.