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fightcovid19.hku.hk
| | www.nytimes.com
2.4 parsecs away

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| | One of the largest studies to date shows masks work.
| | www.verywellhealth.com
3.8 parsecs away

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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.
| | smartairfilters.com
2.6 parsecs away

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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.
| | news.mcmaster.ca
19.8 parsecs away

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| Vaccines developed at McMaster target the lungs first. [...]Read More...