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The Efficacy of Three-Layered Masks

We are now a year into the Covid-19 pandemic, and while we know that masks are a valuable tool to help curb the spread of the disease, researchers are just now understanding which types of masks work best.

 

A study from Duke University has revealed, through testing 14 different types of masks with maskless control groups, that bandana and neck fleece masks do little to prevent the transmission of droplets. The researchers also concluded that masks made of polypropylene, or that have a polypropylene filter transmitted the fewest droplets along with surgical and N95 masks. 

 

Interestingly, the researchers found that the neck fleece increased the number of respiratory droplets by creating several smaller droplets from larger ones, resulting in more droplets than not wearing masks at all.

 

Chief Public Health Officer Dr. Theresa Tam made the recommendation "to improve the level of protection that can be provided by non-medical masks or face coverings, we are recommending that you consider a three-layer non-medical mask," she said.

 

According to recently updated guidelines, two layers of the mask should be made of a tightly woven fabric, such as cotton or linen, and the middle layer should be a filter-type fabric, such as non-woven polypropylene fabric. In fact, studies have shown that the best fabric for non-medical face masks are a tightly woven quilters cotton. 

 

We know definitively that not all masks have the same degree of protection, and the World Health Organization now recommends that all face masks have three layers and are washed after each use. 

 

Worthy Products is committed to following all CDC guidelines and has used industry leading research and technology to develop their own three layered quilter's cotton reusable face mask with a polypropylene insert. To find out more about our reusable face masks of how to purchase one for yourself, please visit our Next Generation face mask page. 

 

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