@apmalong @itshullabalulu Even with fit tested N95, virus still detectable inside nostril when aerosol concentration is high
https://twitter.com/SimonAJoos... https://t.co/PZhAr8wllU
@apmalong@itshullabalulu即使使用经fit测试的N95，当气溶胶浓度较高时，仍能在鼻孔内检测到病毒
https://twitter.com/SimonAJoos... https://t.co/PZhAr8wllU