WEBVTT

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- Face masks are helpful
in one circumstance,

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and that's they're helpful
to prevent a sick individual

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from spreading it to healthy individuals.

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That's because it catches
the respiratory droplets

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that they maybe excreting when they cough,

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or when they sneeze,
or even just breathing.

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For a healthy person,

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surgical masks does not
really prevent the illness.

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