@jfeldman_epi So the net pop-level reduction is maybe 12.5%, which is hard to see in gross numbers. This number is low, in part because masks not used everywhere. But it does make people who are trying to stay safe MUCH safer when they are are in mixed public environment where masks are used.
@jfeldman\u epi因此，pop水平的净下降率可能为12.5%，这很难从总数中看出。这个数字很低，部分原因是没有在任何地方使用口罩。但当人们身处使用口罩的混合公共环境中时，这确实会让那些试图保持安全的人更加安全。