1 Infection Service, University Hospitals Birmingham NHS Foundation Trust, Edgbaston, Birmingham, UK.
2 Anaesthetics and Critical Care, University Hospitals Birmingham NHS Foundation Trust, Bordesley Green East, Birmingham, UK.
3 Clinical Microbiology, Virology and Public Health Laboratory, UKHSA, University Hospitals Birmingham NHS Foundation Trust, Bordesley Green East, Birmingham, UK. Electronic address: [email protected].