Background: Fluid-repellent surgical masks (FRSMs) are recommended by the UK government for healthcare workers as personal protective equipment (PPE) against SARS-COV-2. UK Infection Prevention and Control (IPC) national guidelines states that 'masks must be well-fitting and fit for purpose, fully covering the mouth and nose'.
Aim: To review the fit of the FRSM supplied to the NHS front line workers against the national IPC guidelines and, through re-audit, assess for improvements in fit with FRSM worn with a plastic strap (intervention A) and FFP3 mask (intervention B).