title: No evidence of an epidemic of locally acquired heterosexual HIV infection in Norway.
abstract: BACKGROUND
  An early sign of a major heterosexual human immunodeficiency virus (HIV) epidemic will be heterosexual infection acquired from persons who were themselves infected through heterosexual intercourse.
  
  
  OBJECTIVE
  To test the hypothesis that there is a growing heterosexual epidemic of HIV in Norway.
  
  
  METHODS
  Data from the mandatory, comprehensive, anonymous HIV case reporting system were analyzed concerning Norwegian residents who had acquired HIV heterosexually and for whom such infections were diagnosed before the year 2001.
  
  
  RESULTS
  One hundred fifty-five (71%) of 221 men were infected abroad, whereas 107 (76%) of 140 women were infected in Norway (mainly by drug injectors and immigrants); 23 men and 55 women had been infected in Norway by partners who themselves acquired HIV through heterosexual intercourse (secondary heterosexual transmission). There was a slightly increasing incidence of all heterosexual cases and secondary cases.
  
  
  CONCLUSIONS
  Secondary heterosexual HIV transmission remains rare in Norway, and a sustainable epidemic of locally acquired infection seems unlikely in the foreseeable future. The magnitude of the heterosexual epidemic will be strongly influenced by infections acquired abroad.
authors.affiliation: Section for Infectious Disease Control, National Institute of Public Health, P.O. Box 4404, Nydalen 0403, Oslo, Norway. preben.aavitsland@folkehelsa.no
authors.forename: Preben
authors.initials: P
authors.lastname: Aavitsland
authors.forename: Øivind
authors.initials: Ø
authors.lastname: Nilsen
authors.forename: Arve
authors.initials: A
authors.lastname: Lystad
mesh_terms: D000328:Adult; D004196:Disease Outbreaks; D018562:Disease Transmission, Infectious / Q000706:statistics & numerical data*; D005260:Female; D015658:HIV Infections / Q000453:epidemiology* / Q000209:etiology / Q000635:transmission*; D020010:Heterosexuality; D006801:Humans; D015994:Incidence; D008297:Male; D009664:Norway / Q000453:epidemiology