Wearing a mask can help prevent the spread of viruses such as SARS-CoV-2, but a mask's effectiveness depends on how well it fits. Currently, there are no simple ways to measure the fit of a mask, but ...
CAMBRIDGE, MA -- Wearing a mask can help prevent the spread of viruses such as SARS-CoV-2, but a mask’s effectiveness depends on how well it fits. Currently, there are no simple ways to measure the ...
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