Scientists now report that wearing two face coverings can nearly double the effectiveness of filtering out SARS-CoV-2-sized particles, preventing them from reaching the wearer’s nose and mouth and causing Covid-19.
The reason for the enhanced filtration isn’t so much adding layers of cloth but eliminating any gaps or poor-fitting areas of a mask, according to the study published in JAMA Internal Medicine.
Read More: https://www.bhaskarlive.in/wearing-2-masks-doubles-protection-against-covid-virus/
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