title: [Contact tracing of pregnant women infected with syphilis and the associated factors].
abstract: OBJECTIVE
  To investigate the current status of contact tracing among pregnant women infected with syphilis and to analyze the associated factors from patients' perspective.
  
  
  METHODS
  Pregnant women who aged 18 years old, receiving prenatal care services in Shenzhen, diagnosed with syphilis according to national diagnostic criteria (WS 273-2007) from 2008 to 2011 were recruited and the total number was 3 551. Information of both pregnant women (including demographic information, laboratory results, syphilis diagnosis, and personal life history) and their partners (including results of partner tracing and laboratory examination) were collected with structured questionnaire by face-to-face interview. Multivariate non-conditional logistic regression model was applied to analyze the factors associated with partners' contract tracing. Odds ratio (OR) and its 95% confidential interval (95%CI) were calculated.
  
  
  RESULTS
  The average age was 28.72 among recruited 3 551 syphilis-infected pregnant women, with standard deviation of 5.21 and range of 18 to 40. Totally 2 550 partners attended antenatal clinics and received syphilis examination, with a contact tracing rate of 71.81%. The OR(95%CI) was 1.70(1.26-2.30) for pregnant women with college or above education when comparing with those with senior high school or below education. The OR(95%CI) was 0.57(0.45-0.71) for those unmarried or divorce when comparing with those married. The OR (95% CI) was 0.73(0.56-0.94) and 0.65(0.53-0.81) for those screened in 28-36 gestational weeks and those screened in >36 gestational weeks or right before delivery separately, when comparing with those screened in ≤27 gestational weeks. The OR (95% CI) was 1.45(1.14-1.84) for those having received sufficient treatment before pregnancy when comparing with those diagnosed with latent syphilis. The OR(95%CI) was 0.31 (0.24-0.39) for those having no treatment or not standardized treatment when comparing with those having standardized penicillin treatment. The OR(95%CI) was 0.53 (0.43-0.65) for those terminating the pregnancy when comparing with those giving birth to a baby. The OR(95%CI) was 1.24 (1.05-1.46) for those having two or more love histories when comparing with those having only one love history. The OR(95%CI) was 4.74 (3.54-6.35) for those intending to disclose the serostatus to their partner when comparing with those showing unwillingness to disclose the serostatus.
  
  
  CONCLUSIONS
  The successful rate of contact tracing among pregnant women infected with syphilis was high. The implementation of contact tracing may be affected by many factors, including patients' education levels, marital status, gestational weeks of screening, stage of syphilis, treatment status, outcome of pregnancy, number of love histories, and willingness of serostatus disclosure.
authors.affiliation: Department of STD Control and Prevention, Shenzhen Center for Chronic Disease Control, Shenzhen 518020, China.
authors.forename: Xiaobing
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of STD Control and Prevention, Shenzhen Center for Chronic Disease Control, Shenzhen 518020, China; Email: hfc0755@sina.com.
authors.forename: Fuchang
authors.initials: F
authors.lastname: Hong
authors.affiliation: Department of STD Control and Prevention, Shenzhen Center for Chronic Disease Control, Shenzhen 518020, China.
authors.forename: Chunlai
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Department of STD Control and Prevention, Shenzhen Center for Chronic Disease Control, Shenzhen 518020, China.
authors.forename: Tiejian
authors.initials: T
authors.lastname: Feng
authors.affiliation: Department of STD Control and Prevention, Shenzhen Center for Chronic Disease Control, Shenzhen 518020, China.
authors.forename: Lina
authors.initials: L
authors.lastname: Lan
authors.affiliation: Department of STD Control and Prevention, Shenzhen Center for Chronic Disease Control, Shenzhen 518020, China.
authors.forename: Yingzhou
authors.initials: Y
authors.lastname: Yang
mesh_terms: D000554:Ambulatory Care Facilities; D002681:China / Q000453:epidemiology; D016358:Contact Tracing; D005260:Female; D006801:Humans; D016015:Logistic Models; D016017:Odds Ratio; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology*; D011295:Prenatal Care; D012747:Sexual Partners; D013587:Syphilis / Q000453:epidemiology*