A likely source of contamination has been identified in an ongoing Listeria outbreak affecting California and Nevada.

Several ready-to-eat food products have since been voluntarily recalled in four western states including Nevada, according to the U.S. Food and Drug Administration, after at least 10 people have been ...

At least 10 people in the U.S. have been sickened in a listeria outbreak linked to ready-to-eat food products, and a producer is voluntarily recalling several products, federal officials said.