title: [Evolution of the prevalence of HIV infection and risk behavior of drug injection among intravenous drug users infected or not infected by HIV in 3 Spanish cities. Working Group of Physicians of the World for the monitoring of HIV infection and risk behaviors in intravenous drug users].
abstract: OBJECTIVE
  To know the evolution of HIV prevalence and risk behavior practices of drug injection in three spanish cities on the basis of the serologic status of injecting drug users.
  
  
  METHODS
  Cross-sectional surveys among users in syringe interchange programmes.
  
  
  RESULTS
  HIV prevalence (self-reported) decreased in Madrid from 50% (1992) down to 41% (1996) (p = 0.01) and did not change in Seville and Valencia from 1994 to 1996. Among HIV-positive injecting drug users, a decrease was observed in the practice of giving and taking used syringes in the three cities, although this decrease reached a statistically significance (p = 0.006) only for giving in Valencia from 1994 to 1996 and was almost significant (p = 0.08) for taking in Madrid from 1993 to 1996. Among HIV-negative injecting drug users, no decreases were observed in the practice of giving and taking used syringes and even a significant increase in giving syringes in Seville was recorded (p = 0.01) from 1994 to 1996.
  
  
  CONCLUSIONS
  HIV prevalence among injecting drug users is stabilized or decreasing in the three studied cities. The prevalence of injecting risk behavior evolves differently according to the serologic status.
authors.affiliation: Centro Nacional de Epidemiología, Ministerio de Sanidad y Consumo, Madrid.
authors.forename: M J
authors.initials: MJ
authors.lastname: Bravo Portela
authors.forename: G
authors.initials: G
authors.lastname: Barrio Anta
authors.forename: L
authors.initials: L
authors.lastname: de la Fuente de Hoz
authors.forename: L
authors.initials: L
authors.lastname: Royuela Morales
authors.forename: C
authors.initials: C
authors.lastname: Colomo Gómez
authors.forename: A
authors.initials: A
authors.lastname: Rodríguez Arenas
mesh_terms: D000328:Adult; D015658:HIV Infections / Q000453:epidemiology* / Q000209:etiology*; D006801:Humans; D016485:Needle Sharing; D015995:Prevalence; D012309:Risk-Taking; D013030:Spain; D015819:Substance Abuse, Intravenous / Q000150:complications*