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１９９３年３月对已建立一年的吸毒者定群研究现场──云南省德宏州瑞丽市、陇川县及潞西县再次进行调查。本次调查７５５例吸毒者及１０２例配偶。从１９９２年进入定群研究ＨＩＶ阴性的８９例静脉吸毒者中，１９９３年又采到血样有５４例，其中９例血清转阳。瑞丽市、陇川县及潞西县１９９２年和１９９３年静注者血清阳转率（／百观察人年）分别为４３．２％及４０．０％，１２．２％及１２．２％，０％及０％。１９９３年新进入定群研究的１１６例静注者中，采集到血样的有１０４例，发现ＨＩＶ阳性３８例。上述三市县１９９２年及１９９３年入定群研究的静注者的ＨＩＶ感染率分别为８１．８％及８５．７％，４４．６％及４０．０％，５．１％及０％。可以看出血清阳转率的高低与ＨＩＶ感染率高低相吻合。ＨＩＶ阳性者的配偶１９９０、１９９２及１９９３年的ＨＩＶ感染率分别为３．１％、９．８％和７．４％，有上升趋势。潞西县ＨＩＶ阳性者少，静脉注射出现时间晚，但近年来静脉吸毒者比例上升快，值得注意。
In March 1993, a survey was conducted on the site of a group study of drug users that had been established for one year - Ruili City, Longchuan County and Luxi County, Dehong Prefecture, Yunnan Province. The survey of 755 drug users and 102 spouses. Of the 89 intravenous drug users who entered HIV-positive cohorts in 1992, 54 were also collected in 1993, of which 9 were seroconverted. The seroconversion rates (/ person-years of observation) in intravenous infusion in Ruili, Longchuan and Luxi counties in 1992 and 1993 were 43.2% and 40.0%, 12.2% and 12.2% respectively, , 0% and 0%. Of the 116 patients who entered the group study in 1993, 104 were collected and 38 were HIV-positive. The HIV infection rates of those who entered the study group in 1992 and 1993 in the three cities and counties were 81.8% and 85.7%, 44.6% and 40.0%, 5.1% and 0% respectively. Can be seen that the level of seroconversion rate consistent with the level of HIV infection. The prevalence of HIV infection among HIV-positive spouses in 1990, 1992 and 1993 were 3.1%, 9.8% and 7.4%, respectively. Luxixian HIV-positive few, intravenous injection appeared late, but in recent years the proportion of intravenous drug users increased rapidly, it is noteworthy.