去年在南非一家HIV诊所抽血。这些研究网络的广泛覆盖使他们能够开发预防和治疗HIV的工具，包括在边缘化或罕见人群中。
Drawing blood at an H.I.V. clinic in South Africa last year. The research networks’ large footprint has enabled them to develop tools to prevent and treat H.I.V., including in marginalized or rare populations.