1. Infection Prevention and Control, University Hospital Southampton NHS Foundation Trust, Southampton, UK
2. Intensive Care, University Hospital Southampton NHS Foundation Trust, Southampton, UK
3. Estates, University Hospital Southampton NHS Foundation Trust, Southampton, UK
4. Department of Infection, University Hospital Southampton NHS Foundation Trust, Southampton, UK
5. Clinical and Experimental Sciences, University of Southampton, Southampton, UK
6. NIHR Southampton Clinical Research Facility and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK