@mskathleenquinn @MackayIM @danfurst It might help protect more vulnerable people.
Also, occasional surges don't necessarily invalidate the premise of masks reducing cases, if the surges are smaller, shorter, etc. (on the margin with all else being equal, always hard to establish).
@mskathleenquinn@MackayIM@danfurst它可能有助于保护更脆弱的人。
此外，如果浪涌较小、较短等（在所有其他条件相同的情况下，总是很难确定），偶尔的浪涌不一定会使减少案例的前提无效。