The most common is N95, which is recommended by the US Centers for Disease Control and Prevention (CDC) for most cases of air contamination. These filters are designed to seal tightly around mouth and nose and are made of material certified to block 95% of particles 0.3 μm or larger in diameter, roughly the size of a single virus and include PM2.5.
Wearing a mask tends to increase the amount of times a person touches their face, putting them at greater risk of contracting a virus like novel coronavirus. More FAQs at: bit.ly/38O83Yo
> Wearing a mask tends to increase the amount of times a person touches their face, putting them at greater risk of contracting a virus like novel coronavirus.