In your mind, Seth -- I mean, you must dream about this -- what is the kind of time scale on, let's start with HIV, for a game-changing vaccine that's actually out there and usable?
在你看来，我的意思是，你在想 什么时候， 就拿艾滋病毒来说， 我们会使用上这种已经存在的游戏替换式疫苗呢？