KLEEN-PAK FOODS of Milwaukee Wisconsin has recalled its 10 ounce and 1 pound packages of fresh spinach because they have the potential to be contaminated with Salmonella, an organism which can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened immune systems. Healthy persons infected with Salmonella often experience fever, diarrhea (which may be bloody), nausea, vomiting and abdominal pain. In rare circumstances, infection with Salmonella can result in the organism getting into the bloodstream and producing more severe illnesses such as arterial infections (i.e., infected aneurysms), endocarditis and arthritis. The recalled spinach was distributed locally in retail stores and food wholesalers in Wisconsin, the Chicago area, and Minnesota. The product comes in 10 ounce and 1 pound packages marked with a use by date of 4/29, 4/30, and 5/01