Syphilis is an infectious disease caused by T. pallidum, primarily transmitted through sexual contact. The disease is characterized by a staged, relapsing, and progressive course, affecting the skin, mucous membranes, nervous system, internal organs, and the musculoskeletal system.
According to WHO data, approximately 8 million new cases are reported annually among the adult population, along with ~700,000 cases of congenital syphilis.