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What is the best mask for COVID-19? A mechanical engineer explains the science after 2 years of testing masks in his lab
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Marketplace tested over 20 different masks. Here's what will best protect you and others during the pandemic | CBC News
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Is your N95-style mask failing you? Lab tests show some falling way short of filtration standards | CBC News
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Face masks cut disease spread in the lab, but have less impact in the community. We need to know why
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![Is your N95-style mask failing you? Lab tests show some falling way short of filtration standards | CBC News Is your N95-style mask failing you? Lab tests show some falling way short of filtration standards | CBC News](https://i.cbc.ca/1.5974454.1639530251!/fileImage/httpImage/kn95-mask-test.png)
Is your N95-style mask failing you? Lab tests show some falling way short of filtration standards | CBC News
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Marketplace tested over 20 different masks. Here's what will best protect you and others during the pandemic | CBC News
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Is your N95-style mask failing you? Lab tests show some falling way short of filtration standards | CBC News
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