[The risk of exposure to hepatitis B and human immunodeficiency virus among employees at Norwegian hospitals].
During the period from 1986 to 1989 a study was carried out to determine the risk of occupational exposure to hepatitis B virus and human immunodeficiency virus among approximately 5,500 employees at Aker hospital, Ullevål hospital and "Sentralsykehuset" in Akershus. Four hundred and fourteen injuries were reported during the study period of approximately 16,800 man-years, corresponding to an injury rate of 2.4/100 man-years. The majority of injuries occurred during direct patient contact in the wards. Of the known sources 8.2% were HBsAg positive and 16.8% HIV-antibody positive. One attendant contracted hepatitis B during the observation period. No HIV-seroconversion has been observed as yet.