西德里森丹市自1985年10月起对血库血和血液成份作HIV抗体检查,进一步研究其受血者HIV的感染率。从20万份血库血HIV抗体试验中检出24名供血者有“西方污点”(Western blot)和免疫荧光试验阳性。其中17名是同性恋或异性恋者,1名过去有经静脉的吸毒行为,1名曾输过血,5名性生活经历不详。10名为多次供血者,6名只一次供血(第一次阳 Since October 1985, the city of West Serengean has conducted HIV antibody tests on the blood and blood components of blood banks to further study the HIV infection rate of its recipients. Twenty-four blood donors were tested positive for Western blot and immunofluorescence from 200,000 blood bank HIV antibody tests. Seventeen of them were gay or heterosexual, one had past intravenous drug use, one had had blood transfusions and five had no sexual experience. 10 were multiple blood donors, 6 only one blood supply (the first positive