Comprehensive Risk Counseling and Services" (CRCS) will be used to guide the case management activities. CRCS combines traditional case management and HIV risk-reduction in an individualized, client-centered program which focuses on the reduction of risk behavior and addresses a client's psychosocial and medical needs. CRCS focuses on seven core elements: recruitment and engagement; screening, enrolling, and assessing; prevention planning; risk reduction counseling; referrals and service coordination; monitoring; and discharge and maintenance. These core elements represent the framework of the intervention, and provide enough flexibility to allow implementation that most appropriately serves the needs of clients. This project's case management will mimic the experimental condition with a meeting schedule reflective of the experimental arm plus a booster session at 3 months.

The experimental condition is a 4-session + 3 month booster intervention. Session 1 includes an introduction to the project, goal setting, assessment of disclosure strategies or tactics utilized, and disclosure triggers. Session 2 focuses on the costs and benefits of disclosing to casual sexual partners and previous best and worst disclosure experiences. Session 3 begins with the delivery of the encouraging messages and review of the disclosure strategies already employed. Session 4 is a continuation of session 3 activities with an additional focus on expanding the participant's repertoire of strategies; discussion of methods of sexual negotiation, and rehearsal. The booster session includes a discussion of what strategies have been used in the preceding months, which strategies worked and how can these be enhanced, which strategies did not work with opportunities for troubleshooting, and an examination of rewards experienced or costs encountered.

The experimental condition is a 4-session + 3 month booster intervention. Session 1 includes an introduction to the project, goal setting, assessment of disclosure strategies or tactics utilized, and disclosure triggers. Session 2 focuses on the costs and benefits of disclosing to casual sexual partners and previous best and worst disclosure experiences. Session 3 begins with the delivery of the encouraging messages and review of the disclosure strategies already employed. Session 4 is a continuation of session 3 activities with an additional focus on expanding the participant's repertoire of strategies; discussion of methods of sexual negotiation, and rehearsal. The booster session includes a discussion of what strategies have been used in the preceding months, which strategies worked and how can these be enhanced, which strategies did not work with opportunities for troubleshooting, and an examination of rewards experienced or costs encountered.

Disclosure to sexual partners is measured at the encounter level (last 5 sexual encounters during the prior 30 day period), and as an aggregate (number of partners disclosed to during the prior 30 day period.

Ordinal measure of HIV transmission risk. The ordinal measure is constructed from information provided by the participant on the last five sexual encounters during the prior 30 days, with the highest risk assigned to encounters involving discordant anal/vaginal intercourse, unprotected, with a discordant partner (XEF)

Reasons for non-disclosure (obstacles) are measured at the encounter level (last five encounters during the prior 30 day period)