In the United States, an estimated 76 million persons contract foodborne illnesses each year. CDC's Emerging Infections Program Foodborne Diseases Active Surveillance Network (FoodNet) collects data on 10 foodborne diseases in nine U.S. sites. FoodNet follows trends in foodborne infections by using laboratory-based surveillance for culture-confirmed illness caused by several enteric pathogens commonly transmitted through food. This report describes preliminary surveillance data for 2002 and compares them with 1996-2001 data. The data indicate a sustained decrease in major bacterial foodborne illnesses such as Campylobacter and Listeria, indicating progress toward meeting the national health objectives of reducing the incidence of foodborne infections by 2010 (objectives 10-1a to 10-1d). However, the data do not indicate a sustained decline in other major foodborne infections such as Escherichia coli O157 and Salmonella, indicating that increased efforts are needed to reduce further the incidence of foodborne illnesses.