Which facial protection / Mask is recommended against COVID-19 infection

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Corona Virus ranges from between 0.06 and 0.14 microns in size. Still Respirator filters (which are designed to filter particles with a size of 0.3 microns are effective to prevent viral infection from the SARS-CoV virus due to a physical phenomena, which is called the brownian motion. It is recommended to use Respirators >N95 (American standard) or at least FFP (European standard)