Face masks to prevent transmission of in
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COWLING, B. J.; ZHOU, Y.; IP, D. K. M.; LEUNG, G. M.; AIELLO, A. E.
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Article
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2010
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Cambridge University Press
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English
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## SUMMARY Influenza viruses circulate around the world every year. From time to time new strains emerge and cause global pandemics. Many national and international health agencies recommended the use of face masks during the 2009 influenza A (H1N1) pandemic. We reviewed the English-language litera