School of Public Health, Yale University, New Haven, CT, USA.
Am J Public Health. 2011 Mar;101(3):539-45. doi: 10.2105/AJPH.2010.191791. Epub 2011 Jan 13.
As a result of the impact of HIV among men who have sex with men (MSM), multiple strategies for reducing HIV risks have emerged from within the gay community. One common HIV risk reduction strategy limits unprotected sex partners to those who are of the same HIV status (serosorting). We tested a novel, brief, one-on-one intervention, based on informed decision-making and delivered by peer counselors, designed to address the limitations of serosorting (e.g., risk for HIV transmission).
In 2009, we recruited a group of 149 at-risk men living in Atlanta, Georgia, and randomly assigned them to an intervention condition addressing serosorting or a standard-of-care control condition.
Men in the serosorting intervention reported fewer sexual partners (Wald χ(2) = 8.79, P < .01) at the study follow-ups. Behavioral results were also consistent with changes in psychosocial variables, including condom use self-efficacy and perceptions of risk for HIV transmission.
With the current intervention, service providers can offer risk reduction for men arguably at the highest risk for HIV infection in the United States. Addressing risks associated with serosorting in a feasible, low-cost intervention has the potential to significantly affect the HIV epidemic.
由于男男性行为者(MSM)中 HIV 的影响,已经出现了多种旨在降低 HIV 风险的策略,这些策略源于同性恋群体。一种常见的 HIV 风险降低策略是将无保护性行为限制在具有相同 HIV 状况的伴侣之间(血清匹配)。我们测试了一种新颖的、简短的、一对一的干预措施,该措施基于知情决策,并由同伴顾问提供,旨在解决血清匹配的局限性(例如,HIV 传播的风险)。
2009 年,我们招募了一群居住在佐治亚州亚特兰大的 149 名高危男性,并将他们随机分配到针对血清匹配的干预组或标准护理对照组。
在研究随访中,血清匹配干预组的男性报告的性伴侣较少(Wald χ(2) = 8.79, P <.01)。行为结果也与心理社会变量的变化一致,包括 condom 使用自我效能感和对 HIV 传播风险的认知。
通过目前的干预措施,服务提供者可以为那些在美国感染 HIV 风险最高的男性提供风险降低服务。在可行的、低成本的干预措施中解决与血清匹配相关的风险有可能显著影响 HIV 流行。