Pepper is the spice most commonly contaminated with salmonella and other pathogens. iStockphoto.com hide caption

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Foster Farms, the chicken processor at the center of a major salmonella outbreak, now faces the threat of a shutdown at its facilities. /PR Newswire hide caption

itoggle caption /PR Newswire

A salmonella outbreak that has sickened more than 270 people has been linked to raw chicken produced at three Foster Farms facilities in California. /PR Newswire hide caption

itoggle caption /PR Newswire

Stewart Parnell (center), former president of the now-defunct Peanut Corp. of America, is one of four executives indicted over a 2009 outbreak of salmonella. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

Farmworkers like these in California picking produce may soon be required by the FDA to take more precautions against spreading foodborne illness. Heather Craig/iStockphoto.com hide caption

itoggle caption Heather Craig/iStockphoto.com

A truckload of live turkeys arrives at the Cargill plant in Springdale, Ark., on Aug. 4. Most turkeys in the U.S. are given low doses of antibiotics, which breed resistant strains of bacteria, including Salmonella. Danny Johnston/AP hide caption

itoggle caption Danny Johnston/AP

Concerns about salmonella contamination led Cargill to recall 36 million pounds of ground turkey sold under many different brand names, including these packages at a Kroger grocery store in Redwood City, Calif. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP