Interventions in All Three Arms
syphilis
SYPHILIS, SECONDARY
In all three study arms, each package or link was assigned a unique number to allow results tracking and matching to index cases. After testing, all alters were asked to scan the QR code in the result report card to submit photographs of their facility-testing or self-testing results and reported matched number. Then alters were asked to complete an anonymous survey. Regardless of study arm, alters received 3 USD when they returned the syphilis testing result photographs (self-testing or facility-testing results) and completed the study survey. Alters with a reactive result who returned photograph of confirmatory testing results or of a treatment report received another 3 USD. Their matching index also received an extra 3 USD as an incentive for successful distribution. In addition, each index could apply for an additional three packages (refundable 3 USD deposit for each SST package; free of charge for notification card package) or for an additional free referral links when their initial link had been used by three alters returning their test results. In all three arms, each alter who returned a test result could become a “secondary index” if he was willing to and met the following criteria: born biologically male, aged 18 years or above, and had ever had sex with a man. Each secondary index could also apply for three SST packages or information packages with free express delivery in S-SST or control arm, while a referral link in RL-SST arm as primary index for distribution to his alters.