When you're out in the community and not a hard percentage of people are vaccinated, if we can get the overwhelming proportion of the population vaccinated and the level of infection namely test positivity is very, very low, then we can start talking about going back from wearing mask.
當你在社區裡,沒有硬性比例的人接種疫苗的時候,如果我們能讓絕大部分人接種疫苗,而且感染水準即檢測陽性率非常非常低,那麼我們就可以開始討論從戴口罩回去。