[Magnitude of human immunodeficiency virus (HIV) infection. Navarre, 1992]

The information available from public laboratories in Navarra (Spain) on tests for detecting anti-HIV antibodies enabled to find out the number of HIV seropositive subjects from 1985 to June 1992, as well as their demographic characteristics and risk habits. 1205 subjects were found to be HIV seropositive, out of a population of 512,512 inhabitants which means an accumulated incidence of a 2.35 cases per thousand inhabitants. Higher rates were observed in young males (13.57 per thousand), and in urban areas (3.7 per thousand). The most frequent risk habit among HIV seropositive is the use drugs by intravenous injection (93.7%) followed by sexual transmission (3.5%). This methodology provides the minimum number of HIV seropositive cases in Navarra, since it does not include those not diagnosed, on diagnosed in private centres in Navarra and/or in other autonomous regions.