The world is facing increasing shortage of protective equipment especially masks with the spread of novel coronavirus(2019-nCoV)to more countries and regions.Can mask protect us from the virus?How do we choose a mask,...The world is facing increasing shortage of protective equipment especially masks with the spread of novel coronavirus(2019-nCoV)to more countries and regions.Can mask protect us from the virus?How do we choose a mask,as there are many different types,such as KN95,N95,surgical mask,etc.?展开更多
文摘The world is facing increasing shortage of protective equipment especially masks with the spread of novel coronavirus(2019-nCoV)to more countries and regions.Can mask protect us from the virus?How do we choose a mask,as there are many different types,such as KN95,N95,surgical mask,etc.?
