Santé publique France has established a surveillance system to monitor the health status of the population living in the area exposed to the industrial fire that occurred in Rouen on September 26, 2019, using data from the National Health Data System (SNDS). The results presented here concern the incidence of cardiovascular diseases.; The trends in hospitalizations for various cardiovascular causes were studied.; No increase in the incidence of these hospitalizations was observed for various cardiovascular health indicators: all cardiovascular causes, stroke, heart failure, acute coronary syndrome, and arrhythmias.; An increase in hospitalizations for venous thromboembolic diseases over a very long period was observed, and it is unlikely that this is a consequence of the fire.; Epidemiological surveillance will continue, and other health indicators will be studied.