The goal of this study is to compare the efficacy of the surgical mask to the N95 respirator in protecting nurses from influenza in the hospital setting. The investigators propose a non-inferiority randomized controlled trial whereby nurses are randomized to either a surgical mask or an N95 respirator when caring for patients with febrile respiratory illness during the influenza season. The hypothesis is that the surgical mask offers similar protection against influenza to that of the N95. The specific objective of the study is to assess whether the rates of influenza (laboratory-confirmed by PCR and HAI assay), as well as secondary outcomes (influenza-like illness, work-related absenteeism, physician visits for respiratory illness, and lower respiratory infection), are similar among nurses using a surgical mask compared to those using an N95 respirator.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
447
Surgical mask worn for patients with febrile respiratory illness
N95 mask worn for patients with febrile respiratory illness
Hamilton Health Science
Hamilton, Ontario, Canada
Laboratory-confirmed Influenza Infection
Laboratory confirmed influenza
Time frame: one year
Physician Visits for Respiratory Illness
visit to primary care MD
Time frame: one year
Influenza-like Illness
Cough and fever
Time frame: Over entire study period
Absenteeism
Absent from work because of flu-like illness
Time frame: over study period
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