Wearing a mask is an effective means of interrupting the transmission of respiratory secretions. At present, the masks that can be seen on the market mainly include medical protective masks (such as N95 masks), medical surgical masks and ordinary disposable medical masks.

In addition, there are cotton masks, sponge masks, etc. that are often worn by various celebrities on the market

"Internet celebrity masks". Citizens should choose medical surgical masks for daily protection. N95 masks have a better disease prevention effect, but they have poor breathability and greater breathing resistance, making them not suitable for long-term wear.

"Novel Coronavirus Infection Protection" 5. How to choose a mask? I am hitting it in my hand, please wait a moment,

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