Table 1 Inclusion and exclusion criteria for the PICASSO 2 study, Lima, Peru, 2018–2022
Inclusion Criteria | Exclusion Criteria |
|---|---|
Age ≥ 18 years old | Unable to give informed consent |
Newly diagnosed with syphilis infection | Unlikely to complete study follow up |
• Group 1 (n = 100): No history of syphilis and documented negative Treponema pallidum antibody test in past 12 months |  |
• Group 2 (n = 100): History of syphilis (documented positive Treponema pallidum antibody test) and history of syphilis treatment |  |
Intention to stay in Lima or its environs for the next 12 months |  |
Willingness to provide fingerstick and venipuncture whole blood specimens | Â |