Journal Article

A Quantitative Assessment of the Efficacy of Surgical and N95 Masks to Filter Influenza Virus in Patients with Acute Influenza Infection

D. F. Johnson, J. D. Druce, C. Birch and M. L. Grayson

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 49, issue 2, pages 275-277
Published in print July 2009 | ISSN: 1058-4838
Published online July 2009 | e-ISSN: 1537-6591 | DOI: http://dx.doi.org/10.1086/600041
A Quantitative Assessment of the Efficacy of Surgical and N95 Masks to Filter Influenza Virus in Patients with Acute Influenza Infection

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We assessed the in vivo efficacy of surgical and N95 (respirator) masks to filter reverse transcription-polymerase chain reaction (RT-PCR)-detectable virus when worn correctly by patients with laboratory-confirmed acute influenza. Of 26 patients with a clinical diagnosis of influenza, 19 had the diagnosis confirmed by RT-PCR, and 9 went on to complete the study. Surgical and N95 masks were equally effective in preventing the spread of PCR-detectable influenza.

Journal Article.  2054 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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