In France, the surveillance of foodborne infectious diseases relies on several systems: mandatory reporting (DO), National Reference Centers (CNR), networks of laboratory scientists, and networks of volunteer clinicians. Its main objectives are to track trends in the diseases under surveillance, describe case characteristics, and detect outbreaks or emerging phenomena. Nine foodborne diseases and foodborne outbreaks (Tiac) are subject to mandatory reporting, and 14 NRCs contribute to the surveillance of 17 foodborne pathogens. The main limitations of these systems stem from the fact that they capture only a portion of the cases occurring in the general population. The proportion of cases identified by each system depends on the nature of the system and the disease being monitored. It varies according to the characteristics of the cases and thus affects the representativeness of the surveillance. It may also change over time, potentially compromising trend monitoring. However, the diversity and complementarity of these systems provide data that make it possible to assess the impact of existing prevention or control measures and to adapt them or direct efforts toward new measures. (R.A.)