@awiner @Bob_Wachter At once per month you might be getting close to the risk of seasonal flu infection (about 5-15% per year). Of course, this assumes no other risks, meaning no in-home unmasked gatherings, constant masking at work, school, etc.
("Masked" = excellent quality mask worn properly.)
@awiner @Bob_Wachter 每月一次，您可能会接近感染季节性流感的风险（每年约 5-15%）。当然，这不承担任何其他风险，这意味着没有在家中不戴口罩的聚会，在工作、学校等场所不断戴口罩。
（“蒙面”=正确佩戴的优质口罩。）