扩大PrEP覆盖范围通过在三个高资源环境中向MSM提供长效注射PrEP对人口层面的影响:模型比较分析分析
Sarah E Stansfield1, Jesse Heitner2, Kate M Mitchell3,4,5
1Fred Hutchinson Cancer Center, Seattle, Washington, USA.
Journal of the International AIDS Society
|July 13, 2023
概括
扩大长效可注射卡博特格拉维尔 (CAB-LA) 的使用范围,用于艾滋病毒暴露前预防 (PrEP),可以显著减少新的艾滋病毒感染. 然而,这种扩张的效率因环境而异,在像亚特兰大这样的高发病率地区更具影响力.
科学领域:
- 公共卫生 公共卫生
- 流行病学 流行病学
- 预防艾滋病毒 预防艾滋病毒
背景情况:
- 长效注射性卡博特格拉维尔 (CAB-LA) 在艾滋病毒暴露前预防 (PrEP) 方面表现出优于每日使用的特诺福维尔二氧化 fumarate/emtricitabine (TDF/FTC).
- 不同的全球环境有不同的艾滋病毒流行病和现有的PrEP覆盖水平.
- 了解扩大CAB-LA的PrEP覆盖范围的影响对于有效的艾滋病毒控制战略至关重要.
研究的目的:
- 通过向与男性发生性关系的男性 (MSM) 提供CAB-LA来比较扩大PrEP覆盖范围的潜在影响.
- 评估PrEP扩展在不同艾滋病毒发病率的环境中的有效性和效率 (亚特兰大,蒙特利尔和荷兰).
- 评估CAB-LA推广对减少艾滋病毒感染和解决PrEP获取差异的影响.
主要方法:
- 利用了三种独立参数化和校准的风险分层的艾滋病毒传播模型,用于亚特兰大,蒙特利尔和荷兰.
- 模拟PrEP扩展场景,将新的CAB-LA用户纳入并将现有的TDF/FTC用户切换到CAB-LA.
- 与基线TDF/FTC仅场景相比,对20年来PrEP扩展的评估人口有效性和效率.
主要成果:
- 预计在亚特兰大增加PrEP覆盖率11个百分点,可以避免36%的新艾滋病毒感染.
- 对于蒙特利尔和荷兰的可比减少,需要大幅增加PrEP覆盖率.
- 到2032年,通过CAB-LA达到50%的PrEP覆盖率,可以在所有环境中避免超过45%的新艾滋病毒感染,并减少PrEP获取的种族差异.
结论:
- 通过CAB-LA实现高PrEP覆盖率,如果没有延迟实施,可能会对艾滋病毒流行病产生重大影响.
- 在艾滋病毒发病率较高的环境 (例如,亚特兰大) 与发病率较低的环境 (例如,荷兰蒙特利尔) 相比,使用CAB-LA扩展PrEP可能更有效.
- 及时推广和战略实施是最大限度地提高CAB-LA在艾滋病毒预防工作中的有效性的关键.
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