Why do you assume 普通口罩就能挡住(不喷出去)飞沫(自己的)but not able to block other's 飞沫? Why do you assume masks are either 100% effective or 100% ineffective? Masks are the first line of defense, they block xx% of the cough droplets coming to you, and then your own immune system needs to deal with the rest. Without masks, your own immune system needs to deal with 100% of the virus in the cough droplets you encounter. Which case gives you a better chance? Diamond Princess teaches us a valuable lesson that we seem to ignore. The virus can get into the air, in the cough droplets or aerosol; otherwise there is no way to explain the high rate of infection, 19%, on diamond Princess. Once they had confirmed cases onboard, they quarantined the passengers. So surface contamination and contact cannot explain this high rate of infection. The only explanation is the virus somehow got into the air with the help from AC circulation. It is obvious that facial masks should be recommended. Now, CDC says it does not recommend healthy people to ware masks, but I won't be surprised if later it clarifies and says it did not mean to "recommend against healthy people to ware masks." The only reason why CDC does not recommend masks, I guess, is there is not enough mask available for average people, and it does not want to create a panic. If it says people don't know how to wear it properly, then educate people.
That's right, also because they don't want to learn from China because of their arrogance. However, once the price is painfully too high, they will adapt.
普通百姓根本不需要n95,如果按照标准防护程序,n95也只能用4小时,口罩的作用实
际上是防护自己的飞沫喷出,而不是防护别人的飞沫吸入,实际上即使是标准医用口罩,通气量的80%也是从口罩侧面进入。
病毒是几微米,跟本挡不住,但是飞沫(自己的)普通口罩就能挡住(不喷出去)
所以,如果全民戴口罩,即使布口罩也是有效的。
如果全民不戴,你自己戴,基本没用,得全身隔离衣才行。
还是缺少有效宣导和科普,懂得戴口罩的原理,才能有效防护。
美国人即使有口罩,也没习惯戴
Why do you assume 普通口罩就能挡住(不喷出去)飞沫(自己的)but not able to block other's 飞沫? Why do you assume masks are either 100% effective or
100% ineffective?
Masks are the first line of defense, they block xx% of the cough droplets
coming to you, and then your own immune system needs to deal with the rest. Without masks, your own immune system needs to deal with 100% of the virus in the cough droplets you encounter. Which case gives you a better chance?
Diamond Princess teaches us a valuable lesson that we seem to ignore. The
virus can get into the air, in the cough droplets or aerosol; otherwise
there is no way to explain the high rate of infection, 19%, on diamond
Princess. Once they had confirmed cases onboard, they quarantined the
passengers. So surface contamination and contact cannot explain this high
rate of infection. The only explanation is the virus somehow got into the
air with the help from AC circulation. It is obvious that facial masks
should be recommended.
Now, CDC says it does not recommend healthy people to ware masks, but I won't be surprised if later it clarifies and says it did not mean to "recommend against healthy people to ware masks." The only reason why CDC does not
recommend masks, I guess, is there is not enough mask available for average people, and it does not want to create a panic. If it says people don't
know how to wear it properly, then educate people.
That's right, also because they don't want to learn from China because of
their arrogance. However, once the price is painfully too high, they will
adapt.
【 在 sjtuboston (国际会议-联合国采购) 的大作中提到: 】
: 美国人即使有口罩,也没习惯戴
是的,主要是态度问题
这个要傻到什么程度才能说出这种口罩没用的话
直接防止正面飞沫,减少气溶胶的吸入。得病不是吸入了病毒就有,这个不是欧阳锋的鲨鱼,是不是得病取决于吸入了多少,普通口罩90%的防护力甚至85%,就可以减少几倍的病毒了
【 在 mjj3 () 的大作中提到: 】
: 普通百姓根本不需要n95,如果按照标准防护程序,n95也只能用4小时,口罩的作用实
: 际上是防护自己的飞沫喷出,而不是防护别人的飞沫吸入,实际上即使是标准医用口罩
: ,通气量的80%也是从口罩侧面进入。
: 病毒是几微米,跟本挡不住,但是飞沫(自己的)普通口罩就能挡住(不喷出去)
: 所以,如果全民戴口罩,即使布口罩也是有效的。
: 如果全民不戴,你自己戴,基本没用,得全身隔离衣才行。
: 还是缺少有效宣导和科普,懂得戴口罩的原理,才能有效防护。
美国全国上下都是这类货。包括蒙古大夫。那么,来吧,英雄们。
【 在 shakuras (doskey) 的大作中提到: 】
: 这个要傻到什么程度才能说出这种口罩没用的话
: 直接防止正面飞沫,减少气溶胶的吸入。得病不是吸入了病毒就有,这个不是欧阳锋的
: 鲨鱼,是不是得病取决于吸入了多少,普通口罩90%的防护力甚至85%,就可以减少几倍
: 的病毒了
尼玛现在是医用口罩不够了好不好, 还轮不到你个普通屁民戴口罩, 等屁民都需要带了, 那就不是不够的问题了。
不是完全没用,是在需要采取的措施里优先级很低。social distancing能执行,啥都
不需要,不能执行,啥都没用
【 在 shakuras (doskey) 的大作中提到: 】
: 这个要傻到什么程度才能说出这种口罩没用的话
: 直接防止正面飞沫,减少气溶胶的吸入。得病不是吸入了病毒就有,这个不是欧阳锋的
: 鲨鱼,是不是得病取决于吸入了多少,普通口罩90%的防护力甚至85%,就可以减少几倍
: 的病毒了
据我所知,这口罩只有一层,非常薄,没啥保护能力。感兴趣的人可以买回来看看。
【 在 mjj3 () 的大作中提到: 】
: 普通百姓根本不需要n95,如果按照标准防护程序,n95也只能用4小时,口罩的作用实
: 际上是防护自己的飞沫喷出,而不是防护别人的飞沫吸入,实际上即使是标准医用口罩
: ,通气量的80%也是从口罩侧面进入。
: 病毒是几微米,跟本挡不住,但是飞沫(自己的)普通口罩就能挡住(不喷出去)
: 所以,如果全民戴口罩,即使布口罩也是有效的。
: 如果全民不戴,你自己戴,基本没用,得全身隔离衣才行。
: 还是缺少有效宣导和科普,懂得戴口罩的原理,才能有效防护。
要不你先给美国医院建议下,不要让医生戴口罩?
【 在 mjj3 () 的大作中提到: 】
: 普通百姓根本不需要n95,如果按照标准防护程序,n95也只能用4小时,口罩的作用实
: 际上是防护自己的飞沫喷出,而不是防护别人的飞沫吸入,实际上即使是标准医用口罩
: ,通气量的80%也是从口罩侧面进入。
: 病毒是几微米,跟本挡不住,但是飞沫(自己的)普通口罩就能挡住(不喷出去)
: 所以,如果全民戴口罩,即使布口罩也是有效的。
: 如果全民不戴,你自己戴,基本没用,得全身隔离衣才行。
: 还是缺少有效宣导和科普,懂得戴口罩的原理,才能有效防护。
否认口罩不够的事实?那彭斯要老百姓捐口罩啥意思?
【 在 mjj3 () 的大作中提到: 】
: 普通百姓根本不需要n95,如果按照标准防护程序,n95也只能用4小时,口罩的作用实
: 际上是防护自己的飞沫喷出,而不是防护别人的飞沫吸入,实际上即使是标准医用口罩
: ,通气量的80%也是从口罩侧面进入。
: 病毒是几微米,跟本挡不住,但是飞沫(自己的)普通口罩就能挡住(不喷出去)
: 所以,如果全民戴口罩,即使布口罩也是有效的。
: 如果全民不戴,你自己戴,基本没用,得全身隔离衣才行。
: 还是缺少有效宣导和科普,懂得戴口罩的原理,才能有效防护。
疫情严重到一定程度的话,政府发令,人都呆家里了。
疫区现在超市里没几个人,街上也没什么人,大部分公共场所都关了,口罩有什么用。
【 在 fireroad (地狱之路) 的大作中提到: 】
: 不是完全没用,是在需要采取的措施里优先级很低。social distancing能执行,啥都
: 不需要,不能执行,啥都没用