有人说中国控制疫情不错,是因为每人都戴口罩。这是乱联系。好转是因为封城封户,极端地practice social distancing。
有人说西方不提倡戴口罩是因为缺货。想象力过于丰富了。我们诊所存货不多,平时也不多。反正没人戴,只是备货而已。而且口罩不是高科技。如果需要生产起来也会很快的。你自己缝,一天也能做几十个吧。据说中国现在口罩的生产量已经回复到每天上亿只了。就算加拿大落后1万倍,每天一年生产1万只了。
我相信西方民主国家也不会欺骗民众,说口罩没有用,只是因为缺货。欺骗和隐瞒不会起正面作用,相信大家都明白。
Surgical masks: While they do protect from large respiratory droplets (a spray from a sneeze or mucus from a cough), they don't prevent against airborne droplets.
But in the US, Chiu said, wearing a mask could give wearers a "false sense of security," he said: If concerned people wear a surgical mask, usually made out of thin fabric or paper, they may not continually wash their hands or fear contact with infected people.
这两段你解释一下呗。我们不期望100 %,也知道该小心还是得小心,那只是多一重保护而已。