 VIII. Confirmation of Partner Notification: In order to provide independent confirmation of participant-reported notification status, study staff will ask participants for permission to conduct third party partner notification and confirmation of reported notification status. Participants will be asked for permission to contact their recent partners by telephone or e-mail to confirm the notification outcome. Subjects will be informed that they are not obligated to provide contact information for any of their partners. Subjects will also be informed that if they provide contact information for their partners, study staff will contact the person using the contact information provided and notify the person only that someone they recently had sex with has been diagnosed with syphilis, provide information on local sites offering free or low cost testing for HIV and STIs, and answer any questions the partner might have. Subjects will be informed that study staff will not reveal the participants name or other identifying information to their partners. If the participant provides contact information for their partners, study staff will contact the person and provide third-party partner notification using an IRB-approved script. After completing the partner notification process, study staff will ask the partner only if they had previously been notified by a partner about an STI diagnosis YesNo. Partners will not be asked for any additional information. 