ORIGINAL CONTRIBUTION JAMA-EXPRESS Surgical Mask vs N95 Respirator for Preventing Influenza Among Health Care Workers A Randomized Trial Mark Loeb, MD, MSc Context Data about the effectiveness of the surgical mask compared with the N95 Nancy Dafoe, RN respirator for protecting health care workers against influenza are sparse. Given the likelihood that N95 respirators will be in short supply during a pandemic and not avail- James Mahony, PhD able in many countries, knowing the effectiveness of the surgical mask is of public Michael John, MD health importance. Alicia Sarabia, MD Objective To compare the surgical mask with the N95 respirator in protecting health care workers against influenza. Verne Glavin, MD Design, Setting, and Participants Noninferiority randomized controlled trial of Richard Webby, PhD 446 nurses in emergency departments, medical units, and pediatric units in 8 tertiary Marek Smieja, MD care Ontario hospitals. David J. D. Earn, PhD Intervention Assignment to either a fit-tested N95 respirator or a surgical mask when Sylvia Chong, BSc providing care to patients with febrile respiratory illness during the 2008-2009 influ- enza season. Ashley Webb, BS Main Outcome Measures The primary outcome was laboratory-confirmed influ- Stephen D. Walter, PhD enza measured by polymerase chain reaction or
JAMA – American Medical Association
Published: Nov 4, 2009
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