An experimental vaccine regimen has shown a modest ability to protect people exposed to HIV, the first time an investigational HIV vaccine has been shown to have this effect.

• 种试验性免疫疫苗疗法显示出可适当保护爱滋病病毒(HIV)易感人群，这是尚在研究阶段的HIV疫苗首次显示出有此效果。