[Introduction to the Transition of Mandatory Surveillance System in the Syphilis Monitoring].

As of October 2023, syphilis is a class 4 infectious disease under a sentinel surveillance system. It will be converted to a class 3 infectious disease subject to the mandatory monitoring system from January 1st, 2024. Syphilis is a disease that should take into account the continuity of prevention, diagnosis, treatment, and chronic care management due to the high risk of infection, severe complications, long-term transmission, increased economic and psychological burden from follow-up and continuing occurrence. In the current sentinel monitoring system, it is difficult to understand the overall occurrence situation due to the unavailability of the epidemiological information. Through the transition to the mandatory monitoring system, we can collect the epidemiological data that can describe the trends in the prevalence to promote the prevention and control of syphilis.