Can mask protect people from the Coronavirus? Face mask that filter small particles, viruses and bacteria. Pathogens and Air Pollutants. compare size of pathogens like virus, bacteria, size of red blood cell and tissue of filtering face mask.

Can mask protect people from the Coronavirus? Face mask that filter small particles, viruses and bacteria. Pathogens and Air Pollutants. compare size of pathogens like virus, bacteria, size of red blood cell and tissue of filtering face mask. - 143231702

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