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Influenza Encyclopedia

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Abstract

The use of face masks to prevent infection is now generally accepted, but the type of face masks worn remains variable; experimented with commonly used mask material to prove their efficacy or lack of efficacy in preventing infection; experiments show a 10-foot danger zone for speaking; experiments demonstrate the effectiveness of three layer buttercloth masks.

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Published: Ann Arbor, Michigan: Michigan Publishing, University Library, University of Michigan.

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