N95 mask reuse in a major urban hospital: COVID-19 response process and procedure.

Background: The shortage of single-use N95 respirator masks (NRMs) during the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has prompted consideration of NRM recycling to extend limited stocks by healthcare providers and facilities.

Aim: To assess potential reuse via autoclaving of NRMs worn daily in a major urban Canadian hospital.

Methods: NRM reusability was assessed following collection from volunteer staff after 2-8 h use, sterilization by autoclaving and PortaCount fit testing.