@HalCranmer @ChrisACole @IslandPirates77 @elaine_hali @J_D_Klein The same data also show that the MIX of masks that people use is effective at a statistically significant level. So if you guide people to use masks, some use cloth and some use surgical, there is a statistically significant benefit at the population level. That's public health.
@HalCranmer@ChrisACole@IslandPirates77@elaine_hali@J_D_Klein相同的数据还表明，人们使用的口罩组合在统计显著水平上是有效的。因此，如果你指导人们使用口罩，一些人使用布，一些人使用外科手术，在人口水平上有一个统计上显著的好处。这就是公共卫生。