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A public service announcement from the Government of California encouraging people to wear masks to "slow the spread". In late March 2020, some government officials began to focus on the wearing of masks to help prevent transmission of COVID-19 as opposed to protecting the wearer; former FDA Commissioner Scott Gottlieb stated in a report that face masks would be "most effective" at slowing its ...
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Nuna art is distinguished in particular by its very colorful masks - red, white and black - statuettes in clay and wood, stools and jewels, generally destined to honor the ancestors. Bird mask [ 3 ] Butterfly mask [ 4 ]
FFP3 face mask. Aerosol filtration percentage: 99% minimum; Internal leak rate: maximum 2% [8] The FFP3 mask is the most filtering of the FFP masks. It protects against very fine particles such as asbestos and ceramic. It does not protect against gases and in particular oxides of nitrogen. [11]
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An early reference to plague doctors wearing masks is in 1373 when Johannes Jacobi recommends their use but he offers no physical description of what these masks looked like. [19] The beaked plague doctor inspired costumes in Italian theater as a symbol of general horror and death, though some historians insist that the plague doctor was ...