Mask Facts - AAPS | Association of American Physicians and Surgeons

Mask Facts - AAPS | Association of American Physicians and Surgeons: curated by Marilyn M. Singleton, M.D., J.D. Transmission of SARS-CoV-2 Note: A COVID-19 (SARS-CoV-2) particle is 0.125 micrometers (μm); influenza virus size is 0.08 – 0.12 μm; a human hair is about 150 μm. *1 nm = 0.001 micron; 1000 nm = 1 micron; Micrometer (μm) is the preferred name for micron (an older term) […]