How long after syphilis treatment can you sleep together?

Syphilis is a sexually transmitted disease caused by Treponema pallidum infection. After syphilis treatment, Treponema pallidum in normal body will be greatly reduced, and infectivity will be greatly reduced. However, to determine whether to cure, clinical mainly according to syphilis patients blood plasma reagin titer, that is, RPR titer to determine. Strictly speaking, only this titer negative, in order to think that syphilis is not infectious, can be the same room, do not infect each other. Of course, this negative may take a long time, 1 to 2 years. If there is indeed a need for the same room, you can use contraception, that is, the use of condoms to prevent skin mucosa and body fluid contact exchange, so that you can prevent infection to the greatest extent possible.