title: [HIV prevalence among individuals having had serology performed in eight Spanish cities following heterosexual exposure, 1992-2003].
abstract: BACKGROUND
  The human immunodeficiency virus (HIV) epidemic in Spain was characterized throughout the first few years by the predominance of infections among injected drug users (IDU's), but everything currently points to a progressive predominance of sexual transmission. This study is aimed at describing the trend in HIV infection among several heterosexual populations groups and at characterizing the situations in which the infections occurred.
  
  
  METHODS
  Descriptive study of the individualls who had the test conducted for the first time at nine HIV diagnosis centres within the 1992-2003 period due to high-risk heterosexual exposures, not including injected drug users.
  
  
  RESULTS
  A total of 47,870 individuals had serology performed during the period under study. The HIV prevalence among the population under study dropped from 3.2% to 1.0% (p< 0.001). Among the individuals with an HIV infected partners, the prevalence remained at around 10%, the male users of prostitution having dropped from 1.9% to 1.0% (p=0.049); among women involved in prostitution, from 1.4% to 0.7% (p=0.008); and among all other heterosexuals, having dropped from 1.6% to 1.0% among males (p=0.014) and from 1.1% to 0.7% among women (p=0.012).
  
  
  CONCLUSIONS
  The results indicate advances in the control of heterosexual human immunodeficiency virus transmission, mainly among women, although it is necessary to still continue stressing prevention.
authors.affiliation: Centro Nacional de Epidemiología, Instituto de Salud Carlos III, Madrid. alicia@isciii.es
authors.forename: Alicia
authors.initials: A
authors.lastname: Barrasa
authors.forename: Castilla
authors.initials: C
authors.lastname: Jesús
authors.forename: Jorge
authors.initials: J
authors.lastname: del Romero
authors.forename: Isabel
authors.initials: I
authors.lastname: Pueyo
authors.forename: Carlos
authors.initials: C
authors.lastname: de Armas
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Varela
authors.forename: José Manuel
authors.initials: JM
authors.lastname: Ureña
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Bru
authors.forename: Juan Ramón
authors.initials: JR
authors.lastname: Ordoñana
authors.forename: Jordi
authors.initials: J
authors.lastname: Balaguer
authors.forename: Luis María
authors.initials: LM
authors.lastname: Sáez de Vicuña
mesh_terms: D015492:AIDS Serodiagnosis / Q000706:statistics & numerical data*; D000293:Adolescent; D000328:Adult; D005260:Female; D015658:HIV Infections / Q000453:epidemiology*; D020010:Heterosexuality; D006801:Humans; D008297:Male; D015995:Prevalence; D013030:Spain / Q000453:epidemiology; D014505:Urban Population