The Washington Post is providing this news free to all readers as a public service. Follow this story and more by signing up for health, science, and environment email alerts. On Friday, President ...
A new study suggests that homemade face masks with two or three layers may be more effective in preventing the spread of the novel coronavirus compared with a single-layered face covering. Researchers ...
The Public Health Agency of Canada is now advising Canadians to wear three-layer non-medical masks, which feature a filter layer, for additional prevention against the spread of COVID-19. According to ...
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