- Took part in the VPS2 study and completed 12 months of follow-up, or each participant must meet at least 1 of the following conditions: 1) has sex with an HIV-infected male; 2) has sex with a male who has injected drugs in the last 5 years; 3) has had sex with 5 or more male partners in the last year; 4) exchanged sex for money or drugs in the last year; 5) was diagnosed with syphilis, chlamydia, gonorrhea, first episode herpes, pelvic inflammatory disease, and/or trichomonas in the last year; or 6) used crack cocaine in the last year.