Wearing a face mask when outside your home or in public spaces, even when you feel healthy, can help prevent the spread of the coronavirus. Depending on the type of mask, face masks offer a different level of protection to the wearer.
N95 Respirators: N95 respirator masks are designed to create a secure fit around the nose and mouth and offer multiple-layer protection to the wearer. The N95 face masks provide high filtration efficiency and can block at least 95% of harmful airborne particles.
KN95 Respirators: KN95 respirator masks also offer multiple layer protection and filter out at least 95% of small airborne particles. KN95 face masks are a suitable alternative to N95 respirators.
Surgical Masks: Surgical masks are disposable coverings made using 3 layers, including an outer nonwoven layer, a middle melt-blown layer, and an inner soft non-woven layer. Designed to protect the wearer from particle droplets or liquid splashes and spray. Surgical masks should be reserved for healthcare professionals and first responders.
Fabric Masks: A face mask made out of common textiles, usually cotton, to cover the mouth and nose. Since healthcare professionals and COVID-19 infected patients are more in need of surgical masks and N95 respirators, CDC recommends the general public to wear fabric masks instead.
Remember, the main reason to wear a mask is to protect yourself and to protect other people around you.