Table 1

Comparison of syphilis among MSM and low-tier FSW in China

VariableMSMLow-tier FSW*
Syphilis prevalence estimates9.1% (95% CI 7.6% to 10.8%)812.5% (IQR 4.1–20.1)19
Syphilis incidence estimates8–17 cases per 100 person years9–13Unknown
Population size3.6–7.1 million30Unknown
Partner notificationNot routineNot routine
Civil society organisations3112130
  • * Defined as women who usually solicit clients on the street or public outdoor places and sell sex for less than €2–10 per client.

  • Number of men who have sex with men (MSM) at high risk, which was estimated in 2005.30

  • Low-tier female sex workers (FSW) are difficult to reach by conventional public health outreach and estimating the population size and retaining them in cohorts is challenging.