这几天口罩价格飞涨，推荐的 N95口罩好多网上都不太容易买到了， 国内估计应该更难。我刚刚在网上搜索，看到在 UPTODATE 网上有一篇摘要， 内容如下。我想如果急需寄到国内，感觉也并不一定非要用N95 口罩， 医用的似乎效果也不差 （但是我没有看到全文，不知道他们具体是用的什么牌子的口罩进行地比较）。这样大家可以赶紧买了立即邮寄回去，最重要的是说服家人外出时一定戴上口罩，否则就不要出门了。口罩也都是一次性使用，避免重复使用。当然，用N95还是最放心的。 INFECTION CONTROL Facemasks versus N95 respirators for preventing influenza among health care workers (September 2019) Respiratory protection is important for the prevention of influenza transmission in health care settings. Most but not all studies have shown no difference in efficacy between facemasks and N95 respirators for preventing influenza or other respiratory virus infections among health care workers (HCWs). In a large trial of HCWs in outpatient settings who were randomly assigned to use a facemask or an N95 respirator when coming within 6 feet of patients with respiratory illness, there were a similar number of laboratory-confirmed influenza infection events in both groups [32]. There were also no differences between the groups in the incidence of acute respiratory illness events, laboratory-detected respiratory infections, laboratory-confirmed respiratory illness events, or influenza-like illness events. These data support the recommendation to use facemasks for routine care of patients with suspected or confirmed influenza. (See "Infection control measures to prevent seasonal influenza in health care settings", section on 'Type of respiratory protection'.)
n95是在医院零距离接触患者才需要的 平时戴很难受的 另外价格也比level 3医用口罩贵的多 戴一次就扔
这个有用的说明
你确定吗？有什么依据支持这个说法？谢谢
这需要支持么，四面漏风的普通医用口罩，当然不能隔挡空气传播的啊
不是说“MEETS ASTM LEVEL 3 REQUIREMENTS”的surgical face mask可以的吗？版上不是在推荐吗？
那要隔了空气就会闷的喘不上气，戴不住还不如戴个能喘气儿的
人员密集场所：
短时间用不带阀的n95
长时间用带阀的n95
人员不密集场所：
医用口罩