title: HIV prevalence in patients with syphilis, United States.
abstract: BACKGROUND
  Among persons with a sexually transmitted disease (STD), the proportion who are also infected with HIV is a major factor influencing the public health impact of that STD on HIV transmission.
  
  
  OBJECTIVE
  To assess HIV infection in persons with syphilis in the United States.
  
  
  METHODS
  A systematic literature review was conducted of U.S. studies with HIV seroprevalence data in patients with syphilis.
  
  
  RESULTS
  Thirty studies were identified and analyzed. The median HIV seroprevalence in men and women infected with syphilis was 15.7% (interquartile range [IQR]: 13.6-21.8%), among men was 27.5% (23.1-29.6%), and among women was 12.4% (8.3-20.5%). Median odds ratios for men and women, men only, and women only were 4.5, 8.5, and 3.3, respectively. Seroprevalences among men who have sex with men (MSM) and injecting drug users (IDU) ranged from 64.3-90.0% and 22.5-70.6%, respectively.
  
  
  CONCLUSIONS
  Despite substantial variability, HIV seroprevalence is high among patients with syphilis in the United States, identifying them as a critical target group for HIV prevention efforts.
authors.affiliation: Epidemiology and Surveillance Branch, Division of STD Prevention, National Center for HIV, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
authors.forename: M E
authors.initials: ME
authors.lastname: Blocker
authors.forename: W C
authors.initials: WC
authors.lastname: Levine
authors.forename: M E
authors.initials: ME
authors.lastname: St Louis
mesh_terms: D005260:Female; D015658:HIV Infections / Q000150:complications / Q000453:epidemiology*; D006801:Humans; D008297:Male; D016036:Seroepidemiologic Studies; D013587:Syphilis / Q000150:complications*; D014481:United States / Q000453:epidemiology