How long is the incubation period of secondary syphilis?

Syphilis patients from infection to secondary syphilis time about 6 months. Secondary syphilis can be judged according to the patient's symptoms, such as systemic skin, mucosal lesions and lymph node enlargement, at this time standard treatment effect is good, can block the disease development. Syphilis treatment indicators are RPR titer negative or RPR titer reduced to a low level, no infectivity, no organ damage.