1. Department of Health and Social Care, Public Health Wales, Public Health Agency Northern Ireland, Health Protection Scotland/National Services Scotland, Public Health England, NHS England. Covid-19: Guidance for maintaining services within health and care settings—infection prevention and control recommendations (version 1.2). 1 Jun 2021. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/990442/Infection_Prevention_and_Control_Guidance_for_maintaining_services_with_H_C_settings.pdf.
2. Covid-19: Doctors’ leaders call for revised PPE guidance to reflect new variants
3. Covid-19: Wider use of FFP3 masks may be needed because of airborne transmission, say scientific advisers