| Baseline visit | First visit of calendar year | All other follow-up visits | Seroconversion visit1 |
---|---|---|---|---|
HIV-Positive partner | Â | Â | Â | Â |
  Viral load test | X | X | X | X |
  CD4 Count | X | X | X | X |
  STI tests3 | X | X | X | X |
  Blood samples for storage | X | X |  | X |
  Semen sample (optional) 2 | X | X | X | X |
HIV-Negative partner | Â | Â | Â | Â |
  HIV antibody test | X | X | X | X |
  STI tests3 | X | X | X | X |
  Blood samples for storage | X |  |  | X |
  Anal swab for storage | X |  |  | X |