South American Program in HIV Prevention Research, University of California, Los Angeles, USA.
BMC Public Health. 2013 Feb 28;13:181. doi: 10.1186/1471-2458-13-181.
Knowledge of a sex partner's HIV serostatus can influence sexual behavior and inform harm-reduction strategies. We sought to determine how often Peruvian men who have sex with men (MSM) and transgender women (TW) knew the HIV serostatus of their sex partners, if this knowledge was associated with any predictive factors or unprotected anal intercourse (UAI), and if UAI was associated with partner serostatus.
We analyzed data from the 2008 Peruvian MSM Sentinel Surveillance Survey. Data were collected by CASI about each participant's three most recent male sex partners. Primary outcome was knowledge of a partner's HIV test result. Multivariate analysis assessed the effect of age, education, sexual identity, number of male partners, alcohol use during intercourse, type of partnership and length of partnership using logistic regression.
735 participants provided data on 1,643 of their most recent sex partners from the last 3 months. 179/735 (24.4%) of all participants knew HIV test results for at least one of their 3 most recent partners, corresponding to 230/1643 (14.0%) of all sexual partnerships in the last 3 months. In multivariate analysis, casual (OR: 0.27, 95% CI: 0.17-0.42) and exchange sex (OR: 0.31, 95% CI: 0.11-0.88) partners, compared to stable partners, were negatively associated with knowledge of partner serostatus, whereas relationships lasting longer than one night (<3 months OR: 2.20, 95% CI: 1.39-3.51; 3 months to 1 year OR: 3.00, 95% CI: 1.80-5.01; ≥ 1 year OR: 4.13, 95% CI: 2.40-7.10) were positively associated with knowledge of partner serostatus. Knowledge of partner serostatus was not associated with unprotected anal intercourse with that partner.
Few MSM and TW in Peru know their partners' HIV serostatus. Our findings suggest that the type and length of partnership influence the likelihood of knowing a partner's serostatus. Further research should explore the contexts and practices of partner communication, their effect on sexual behavior, and interventions to promote discussion of HIV testing and serostatus as an HIV prevention strategy in this population.
性伴侣的 HIV 血清状况知识会影响性行为，并为减少伤害策略提供信息。我们旨在确定秘鲁男男性接触者（MSM）和跨性别女性（TW）与性伴侣的 HIV 血清状况的了解程度，以及这种了解是否与任何预测因素或无保护的肛交（UAI）相关，以及 UAI 是否与伴侣的血清状况相关。
我们分析了 2008 年秘鲁 MSM 哨点监测调查的数据。通过计算机辅助自报告（CASI）收集了每位参与者最近三次男性性伴侣的信息。主要结局是了解伴侣的 HIV 检测结果。多变量分析使用逻辑回归评估了年龄、教育、性身份、性伴侣数量、性交时饮酒、伴侣关系类型和伴侣关系持续时间对 UAI 的影响。
735 名参与者提供了过去 3 个月内最近 3 次性伴侣中 1643 名性伴侣的数据。735 名参与者中，179 名（24.4%）至少知道他们最近 3 次性伴侣中的 1 名 HIV 检测结果，相当于过去 3 个月内所有性伴侣中的 1643 名（14.0%）。多变量分析显示，与稳定伴侣相比，随意性伴侣（OR：0.27，95%CI：0.17-0.42）和交换性伴侣（OR：0.31，95%CI：0.11-0.88）与伴侣血清状况知识呈负相关，而持续时间超过一晚的伴侣关系（<3 个月 OR：2.20，95%CI：1.39-3.51；3 个月至 1 年 OR：3.00，95%CI：1.80-5.01；≥ 1 年 OR：4.13，95%CI：2.40-7.10）与伴侣血清状况知识呈正相关。伴侣血清状况知识与与该伴侣发生无保护的肛交行为无关。
秘鲁的 MSM 和 TW 中很少有人了解他们伴侣的 HIV 血清状况。我们的研究结果表明，伴侣关系的类型和持续时间会影响了解伴侣状况的可能性。进一步的研究应探讨伴侣沟通的背景和实践，以及它们对性行为的影响，并探索促进讨论 HIV 检测和血清状况作为该人群 HIV 预防策略的干预措施。
