[The HIV-epidemic in Norway 1996--mainly heterosexual transmission].

Up to 1996, a total of 1,537 individuals had been reported as having HIV infection in Norway (population 4.3 million). 511 of these had developed AIDS and 410 had died from AIDS. 223 persons had acquired HIV heterosexually. Less than a fifth of these had acquired the infection from persons who themselves had been infected with HIV heterosexually in Norway. Named testing of pregnant women, recruits and blood donors confirms the limited spread of HIV. We estimate that the annual incidence of heterosexually acquired HIV infection has remained at 20-30 for the last ten years. Earlier prognoses for the epidemic in Norway were grossly erroneous, mainly owing to lack of knowledge about the factors determining the spread of HIV. Given the low rate of transmission of the virus and the sexual behaviour of Norwegians, there was never any real danger of a large heterosexual HIV epidemic in this country. The future efforts to combat the epidemic should focus on maintaining features that make Norwegian society less vulnerable to HIV.