Federal food regulators raised their alarm for recalled eggs sold from Costco stores over possible salmonella exposure, reclassifying the targeted product to their highest risk level.

A recall of organic eggs sold at Costco is now classified at the highest risk level for potential salmonella contamination, according to the Food and Drug Administration.

A recall involving organic eggs sold at Costco has been upgraded to the U.S. Food and Drug Administration's most serious classification due to the risk that consumers may be exposed to salmonella.

A Salmonella outbreak that sickened more than 130 people in Chile may have been caused after food was contaminated with a strain used to monitor testing ...