MMWR Morb Mortal Wkly Rep. 1999 Jan 29;48(3):45-8.
Reductions in AIDS cases among men who have sex with men (MSM) have been attributed in part to widespread declines in unprotected anal sex since the mid-1980s and use of increasingly effective antiretroviral therapy (ART) since the mid-1990s. Because data about HIV infection incidence are limited, other indicators of transmission risk have been used. In San Francisco, data from annual behavioral surveys among MSM (1994-1997) and from the sexually transmitted disease (STD) surveillance program (1990-1997) were analyzed to characterize changes in HIV risk behaviors of MSM and changes in incidence of male rectal gonorrhea. This report describes the findings of these analyses, which indicate increases in unsafe sexual behavior and increases in rates of rectal gonorrhea among MSM.
男男性行为者（MSM）中艾滋病病例的减少，部分归因于自20世纪80年代中期以来无保护肛交行为的普遍减少，以及自20世纪90年代中期以来越来越有效的抗逆转录病毒疗法（ART）的使用。由于关于艾滋病毒感染发病率的数据有限，人们使用了其他传播风险指标。在旧金山，分析了MSM年度行为调查（1994 - 1997年）和性传播疾病（STD）监测项目（1990 - 1997年）的数据，以描述MSM艾滋病毒风险行为的变化以及男性直肠淋病发病率的变化。本报告描述了这些分析的结果，结果表明MSM中不安全性行为增加，直肠淋病发病率上升。
