title: HIV prevalence among foreign- and US-born clients of public STD clinics.
abstract: OBJECTIVE
  We examined differences in HIV seroprevalence and the likely timing of HIV infection by birth region.
  
  
  METHODS
  We analyzed unlinked HIV antibody data on 61 120 specimens from 7 public health centers in Los Angeles County from 1993 to 1999.
  
  
  RESULTS
  Most (87%) immigrant clients were Central American/Mexican-born. HIV prevalence was similar for US- and foreign-born clients (1.8% [95% confidence interval (CI) = 1.7%, 1.9%] and 1.6% [95% CI = 1.5%, 1.8%], respectively). Seroprevalence was high among sub-Saharan African females and low among Asian/Pacific Islander males and females. For HIV-positive immigrants, the average age at and time since immigration were 20.6 years and 12.3 years, respectively.
  
  
  CONCLUSIONS
  The relatively young age at arrival and long time since arrival for HIV-positive foreign-born clients suggest that most were infected after immigration.
authors.affiliation: Los Angeles County Department of Health Services, HIV Epidemiology Program, Los Angeles, CA 90005, USA. nharawa@dhs.co.la.ca.us
authors.forename: Nina T
authors.initials: NT
authors.lastname: Harawa
authors.forename: Trista A
authors.initials: TA
authors.lastname: Bingham
authors.forename: Susan D
authors.initials: SD
authors.lastname: Cochran
authors.forename: Sander
authors.initials: S
authors.lastname: Greenland
authors.forename: William E
authors.initials: WE
authors.lastname: Cunningham
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D004641:Emigration and Immigration; D005006:Ethnicity / Q000706:statistics & numerical data*; D005260:Female; D015658:HIV Infections / Q000453:epidemiology / Q000208:ethnology*; D006679:HIV Seropositivity / Q000208:ethnology; D015528:HIV Seroprevalence; D006801:Humans; D015141:Los Angeles / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000208:ethnology*; D014481:United States / Q000453:epidemiology