One mask offers good defense versus spreading the coronavirus, but two masks could provide more.
As more-contagious variations of the virus are found, the concept of doubling up on masks is gaining traction, especially for those most likely to become seriously ill if they get infected.
Though the Centers for Illness Control and Avoidance does not have standards on double-masking, Dr. Anthony Fauci, the nation’s top infectious disease expert, says it ” just makes sound judgment” that 2 masks may be most likely to protect against COVID-19
Leading health specialists state fit and products determine masks’ efficacy versus coronavirus transmission. Inadequately fitted masks can permit air leaks around the nose and mouth. Materials that are too thin are less efficient at blocking particles in the air.
Numerous Americans have yet to double-mask. In a recent survey a bulk (61%) have never ever worn two face masks on top of each other.
Using two masks has a double advantage: an additional layer of material and a better-fitting face covering. A July research study in the peer-reviewed journal “Matter” discovered that a single mask is 50%reliable at removing aerosols. A 2nd face covering is up to 90?fective.
It not just adds an additional layer of security but likewise makes the mask fit more snug, stated Dr. Loretta Fernandez, an associate teacher at Northeastern University and among the study’s authors.
” We found that the particle elimination effectiveness of numerous surgical design masks might be improved by as much as 50%by simply snugging the mask product to the face,” she stated.
” In the lab, we did this by adding a nylon equipping, however likewise evaluated other elastic layers such as gators and leggings and found that they likewise resolved the problem of cutting off air leaking in from around the mask.”
Choosing much better products
Not all face coverings can safeguard you efficiently from infectious respiratory particles.
Masks made from thin materials, such as a bandannas and neck gaiters, have a loose weave, which allow for big beads to leave and do not supply a reliable level of defense from breathing in smaller sized air-borne particles, according to scientific trials. Thin products are worse since a few of the most comfortable masks are typically thin and don’t do an excellent job of obstructing particles.
Snug fitting masks supply much better protection
When double-masking, a tighter-fitting mask with ear loops or rubber band straps need to be worn closest to the face. It will assist filter the virus’ little aerosol beads. Surgical masks secure the user’s nose and mouth from contact with droplets, splashes and sprays that may include bacteria.
The pros and cons
Layering is essential
How to use double-mask easily
A surgical mask must sit over your nose, mouth and under the chin without any spaces on either side. Layering with the 2nd mask of cotton fabric will keep the first mask snug in location and supply additional protection.
Masks should not be so tight that they restrict your ability to breathe. If you feel light-headed, remove the very first mask.
If the double mask appears too much, a cotton mask with a filter pocket may be much better. Adding any sort of filtering inside the mask might assist to enhance it and include additional protection. An engineer focusing on aerodynamics has actually tested the efficiency of paper towels. A single layer caught 23%of particles 0.3 microns or bigger. Adding an extra layer increased particle capture to 33%.
N95 respirators are tight-fitting and have interlacing fibers to obstruct out at least 95%of airborne particles as small as 0.3 microns. They have a protection factor (APF) of 10, according to the CDC. That indicates the N95 minimizes the aerosol concentration to 1/10 of that in the space– or obstructing 90%of air-borne particles.
When to wear double-masks
If you understand you will remain in close contact with several people outside of your family, such as a supermarket, double-masking is advised. While outside on a walk and not in close range of others, a single mask should suffice.
Considered That highly contagious COVID-19 versions are spreading out throughout in the U.S., doubling up on masks might be more vital than ever. Continued masks wearing, social distancing and good hand health are necessary in the fight versus the coronavirus.
SOURCE Centers for Disease Control and Avoidance; Healthaffairs.org and USA TODAY research study; CONTRIBUTING Adrianna Rodriguez and Karina Zaiets, U.S.A. TODAY
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