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fightcovid19.hku.hk | ||
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www.nytimes.com
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| | | | One of the largest studies to date shows masks work. | |
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smartairfilters.com
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| | | | Researchers randomly assigned people to wear surgical masks or N95 masks. Then they tracked how many caught the flu. The results were very surprising. | |
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www.verywellhealth.com
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| | | | One-way masking still provides protection against COVID-19. To maximize its effectiveness, experts say your mask should be high-quality and well-fitting. | |
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climateandcapitalism.com
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| | Scientists warn: 'The future of humanity hangs in the balance.'... |