The Washington State Department of Health says packaged sprouts are responsible for a salmonella outbreak that has sickened four people in the state. "The outbreak has been tied to clover sprouts from Sprouters Northwest, Inc., of Kent," officials report. "The sprouts are sold in a variety of package sizes labeled 'Clover Sprouts,' or as mixed varieties that contain clover sprouts as an ingredient with 'best by' dates of 01/16/2011 or earlier."

The company has recalled the offending sprouts.