Old habits die hard -- Engineering errors -- Recipes for disaster -- See no evil -- Cross-contamination -- Birth of a pathogen -- USDA, HACCP, and E. coli O157:H7 -- Crossing over -- When the well runs dry -- Mad cows and Englishmen -- The politics of prions, BSE, and world trade -- Asymptomatic carriers and captive audiences -- Deliberately contaminated food -- The impact of imports -- A raw deal -- The media and the message -- Changing old habits.