Science
Study could help improve design, fabrication, and use of nanofiber face masks – News-Medical.net
Since its outbreak, the COVID-19 virus has infected more than 207.7 million people worldwide and has claimed more than 4.3 million…

Since its outbreak, the COVID-19 virus has infected more than 207.7 million people worldwide and has claimed more than 4.3 million lives, according to the World Health Organization coronavirus dashboard as of Aug. 17.
However, many medical professionals…
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