The SurSaUD® syndromic surveillance system automatically and routinely collects individual demographic and medical data recorded during consultations in hospital emergency departments and at SOS Médecins clinics, with the aim of early detection and health surveillance of expected or unusual events of various origins and sources. It is during the analysis phase that this large volume of data is organized through the construction of aggregated epidemiological indicators based on four main categories: age groups, day or week, geographic area of consultation, and syndromic clusters consisting of one or more medical diagnoses or reasons for consultation. Statistical methods for detecting health events are useful tools for supporting the objective analysis of all these indicators, which are produced daily. This methodological article presents the approach to constructing epidemiological indicators, as well as the statistical methods implemented for their analysis to meet the objectives of the SurSaUD® system. (R.A.)