Kn95 grade masks can prevent influenza virus infection. The masks commonly used to prevent virus infection include fda approved kn95 masks and N95 masks, followed by disposable surgical masks.
For ordinary people, if they rarely gather in public places, the chance of contracting the flu virus is relatively small. Ordinary medical masks can also play a protective role and maintain a safe social distance. Ordinary medical masks can also effectively prevent virus infection.
It should also be noted that ordinary cotton masks have no effect on preventing virus infection. To prevent influenza, we also need to exercise actively, work and rest regularly, strengthen nutrition, and improve immunity.
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