In reply to @_catinthehat

In Dec 2020, shortly after the Public Health video about airborne transmission was released & under mounting pressure, the IPC Cell convened to review their decision on FFP3 masks in hospitals. However, they ultimately decided NOT to change the guidance. https://assets.publishing.service.gov.uk/media/60803e558fa8f51b8c531fe2/S1169_Facemasks_for_health_care_workers.pdf