Positive syphilis helical antibodies may be contagious to others, syphilis has specific and non-specific antibodies, whether it is contagious depends on the specific circumstances. 1. Syphilis spiral antibody positive will be infectious to others: if non-specific antibody and specific antibody are positive, on behalf of the syphilis is in the period of infection, infectious, during this period of syphilis will be infectious to others. 2. Syphilis spiral antibody positive will not be infectious to others: if only specific antibody positive, non-specific antibody negative, representing the previous infection through the treatment of the body has been recovered, it is not infectious, will not be infected to others. Syphilis also needs to be combined with syphilis titer and other ancillary tests to confirm the diagnosis, specific advice to consult a specialist.