Reply To: How far back do they go when tracing partners?

It depends on the stage. Syphilis is staged, and the further along it is when found, the longer the look back period, because the infection may have been present for a long time before it was diagnosed.

Early stage means a relatively short window. Later stage can mean going back a year or more. Your clinic will tell you the period that applies to your diagnosis, so ask them directly rather than guessing.