Surgical mask best protects against coronavirus infection. To such conclusion the group of scientists from the University of New South Wales in Australia, reports ScienceDaily.
The researchers compared the effectiveness of three types of masks: single layer, double layer and three-layer surgical PPE.
During the experiment, the researchers used a specially designed led lighting system and high speed camera to monitor the process dispersion of microscopic drops of potential carriers of the virus.
The study showed three-layer surgical face mask is best held back these particles.
The scientists noted that even a single layer of material reduces the amount of spreading of drops, but the double layer of protection was more effective. Thus the action of medical devices is also affected by the type of material used, the design of the product, the fit to the face, as well as the frequency of washing shall be noted in the work.
Researchers advised to make homemade masks from at least two layers of fabric.