@HalCranmer @ChrisACole @IslandPirates77 @elaine_hali @J_D_Klein Is it possible that different advice, for example, to use a surgical mask or better, and if you can't do that to use nothing, might be superior policy? Yes, that is possible, but there is nothing in these data (or elsewhere that I've seen) to support that.
@HalCranmer@ChrisACole@IslandPirates77@elaine_hali@J_D_Klein是否可能有不同的建议，例如，使用外科口罩或更好的口罩，如果你不能做到这一点，不使用口罩，可能是更好的政策？是的，这是可能的，但这些数据（或我看到的其他地方）中没有支持这一点。