And during that period, and that's what we did in Ebola, we were able to use those vaccines to help in outbreaks under a clinical trial protocol while monitoring them and learning.

在那段时间里， 这就是我们在埃博拉病毒中所做的，我们能够根据临床试验方案使用这些疫苗来帮助爆发， 同时进行监测和学习。