if this works, doesn't this imply a lot of the exhaled breath is unfiltered?https://twitter.com/MDiPaolaMD/status/1293311712507166720 …
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Replying to @DanielleFong
It is definitely unfiltered but doesn't project out as far
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Replying to @Obiben55
this limits droplet transmission, but there would still be a problem with aerosol transmission
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Replying to @DanielleFong @Obiben55
in cases that have involved air conditioning for example, in which the air already has to have undergone one sharp redirection (in the ac unit), the aerosols above a certain size, they would already be knocked out given the kind of redirection...
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Replying to @DanielleFong @Obiben55
The mask isn't tight enough to prevent a lot of flow at the sides.
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Replying to @stevebloom55 @Obiben55
the mask i wear has quite a good fit, so i am surprised people are comfortable with leakage :/ gvs p100 http://www.gvs.com/product-family/223/1035/ …
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This mask also has unfiltered exhale air due to the valve in the middle.
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Is that right, Danielle?
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you’re right! it uses a valve, only the intake is filtered
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Replying to @DanielleFong @stevebloom55 and
As you likely know, even masks that are say 50% effective at filtering are still quite effective at reducing the spread of Covid-19 in the population if enough people wear them: https://youtu.be/Y47t9qLc9I4
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