Fig. 1

Serology results of selected samples from the 2007 HIV Sentinel Survey (HSS) and retesting with RPR and TPHA. DS-Determine syphilis TP; TPHA- Treponema pallidum haemagglutination assay; TPHA⁰-TPHA result not available; RPR-rapid plasma reagin; Level A = HSS results of selected samples; Levels B & C = Results of retesting with RPR, TPHA and DS