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A homemade face mask likely needs two or three layers of cloth to be effective in preventing the spread of the coronavirus, according to an observational study published in the medical journal Thorax.
A new study suggests that homemade face masks with two or three layers may be more effective in preventing the spread of the novel coronavirus compared with a single-layered face covering. Researchers ...
Wearing face masks and coverings is recommended, or in some places mandatory, in public spaces to help stop the spread of Covid-19. But what kind of DIY face covering offers the best protection?
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