Surgical mask vs N95 respirator for preventing influenza among health care workers: a randomized trial

M Loeb, N Dafoe, J Mahony, M John, A Sarabia… - Jama, 2009 - jamanetwork.com
Context Data about the effectiveness of the surgical mask compared with the N95 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 available in many
countries, knowing the effectiveness of the surgical mask is of public health importance.
Objective To compare the surgical mask with the N95 respirator in protecting health care
workers against influenza. Design, Setting, and Participants Noninferiority randomized …