Many medical and engineering experts say new variants of the virus are spreading around the country, particularly one that is significantly more transmissible than the currently most common strain.
Masks work best when everyone wears them, but not all masks provide the same protection. When choosing a mask, look at how well it fits, how well it filters the air, and how many layers it has.
According to a study published on Feb 10 by the Centers for Disease Control and Prevention (CDC) it’s time to upgrade the cloth mask you are using now.
The CDC does not recommend the use of NIOSH-approved N95 respirators for protection against COVID-19 in non-healthcare settings because N95 respirators should be reserved for health care workers.
While N95 masks remain scarce, KN95s are pretty easy to come by these days. KN95 masks are regulated by the Chinese government, and, like N95s, they’re supposed to filter out at least 95% of small airborne particles.
Another foreign-made respirator, the KF94, has also gotten a lot of buzz. The KF stands for “Korean filter” – the mask is made in South Korea – and the 94 means it’s designed to block out at least 94% of small particles.
Be warned: About 60% KN95 and some KF94 masks in the United States are counterfeit (fake) and DO NOT meet NIOSH requirements.
Sterasure has created a mask called the Point 1 Nano Mask. This mask is made of a non-woven polypropylene material. It has a 3D design to fit everyone. These washable, reusable masks were tested, and were found to be 97% effective for up to 10 washes.
When the pandemic started spreading last year, the CDC recommended cloth masks to be used by the general public and health care personnel as source control. However, the CDC improved their guidelines on how to buy cloth masks.
In the lab experiments, the double mask was more protective against aerosols from breathing. In a study conducted with a headform – a robotic mannequin head designed to test a respirator’s performance, it blocked 83% of aerosols emitted during 15 minutes of quiet breathing.
As of today, 3 layers of non-woven material disposable face masks are widely available.
CDC recommend a simple tip: Tie a Knot in the ear loops and tuck the excess material of the 3-ply mask to have a better fit and extra protection.
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