Patients’ characteristics N (%)
On antiretroviral treatment at diagnosis 36 (70.6%)
CD4 count (cells/ml)  
<200 2 (3.9%)
      200-349 8 (15.7%)
      350-499 10 (19.6%)
≥ 500 31 (60.8%)
Nadir CD4 count (cells/ml)  
<200 16 (31.4%)
      200-349 9 (17.6%)
      350-499 10 (19.6%)
≥ 500 16 (31.4%)
HIV RNA viral load (copies/ml)  
      Undetectable (≤ 75) 32 (62.8%)
      Detectable (>75) 18 (35.3%)
Syphilis diagnosis  
     Asymptomatic seroconversion 18 (35.3%)
     Primary syphilis 6 (11.8%)
     Secondary syphilis 17 (33.3%)
Neuro- or ocular syphilis 7 (13.7%)
     Unknown 3 (5.9%)
RPR value  
<16 13 (25.5%)
      16-32 12 (23.5%)
      64-128 20 (39.2%)
>128 6 (11.8%)
Syphilis treatment  
Benzathine penicillin one dose 15 (29.4%)
Benzathine penicillin three doses 23 (45.1%)
      IV penicillin G 4 (7.8%)
Other 9 (17.6%)
Patients’ treatment outcome (N=45)  
      Cured, no sequelae 37 (82.2%)
      Cured, with sequelae 4 (8.9%)
      Uncertain 4 (8.9%)
Abbreviations: HIV: Human Immunodeficiency Virus; CD4: Cluster of Differentiation 4; RNA: Ribonucleic Acid; IV: Intravenous.
Table 1: Characteristics of HIV-infected men at the time of syphilis diagnosis (N=51 diagnoses).