Journal
EPIDEMIOLOGY AND INFECTION
Volume 139, Issue 9, Pages 1401-1409Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0950268810002578
Keywords
China; female sex workers (FSWs); sexually transmitted infections (STIs); syphilis
Funding
- National Institute of Allergy and Infectious Diseases, National Institutes of Health [U19 AI51915-05]
- Mega-projects of National Science Research for the 11th Five-Year Plan [2008ZX10001-003]
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The study's objectives were to investigate the prevalence, incidence, persistence, and associated risk factors of syphilis in female sex workers (FSWs) in Kaiyuan City, Yunnan, China. Three serial cross-sectional surveys were conducted and biological specimens were collected and tested for HIV, sexually transmitted infections, and drug use. The logistic Generalized Estimating Equation regression model was used to identify risk factors for prevalent syphilis. The prevalence of syphilis was 7.5%, 8.4% and 8.8%, respectively, in the three survey periods. Estimated syphilis incidence was 1.07 cases/100 person-years, and the persistence of syphilis per person at 6 months was 90.4%. In multivariate analysis, the factors associated with syphilis were age, lower education level, number of clients in a week, inconsistent condom use with clients, herpes simplex virus type 2 (HSV-2), and Chlamydia trachomatis. Persistent syphilis in this population of FSWs is a serious public health concern.
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