Study: Surgical and Cloth Masks Filter Roughly 10% Efficient at Blocking Aerosols

LOS ANGELES, CA - FEBRUARY 02: Travelers arrive to LAX Tom Bradley International Terminal wearing medical masks for protection against the novel coronavirus outbreak on February 2, 2020 in Los Angeles, California. The United States has declared a public health emergency and will implement strict travel restrictions later today. Foreign …
https://www.breitbart.com/politics/2021/08/24/study-surgical-and-cloth-masks-filter-roughly-10-efficient-at-blocking-aerosols/

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