NIV masks for the prevention of COVID-19

NIV masks with viral filters to be worn by health care professionals to prevent SARS-CoV-2 transmission配备病毒过滤器的NIV口罩（NIV masks），供医护人员佩戴以预防严重急性呼吸综合征冠状病毒2型（SARS-CoV-2）的传播