1 University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2WB, UK; Institute of Microbiology and Infection, The University of Birmingham, Edgbaston, Birmingham, UK. Electronic address: mark.garvey@uhb.nhs.uk.
2 University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2WB, UK. Electronic address: martyn.wilkinson@uhb.nhs.uk.
3 University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2WB, UK. Electronic address: elisabeth.holden@uhb.nhs.uk.
4 Clinical Immunology Service, Institute of Immunology and Immunotherapy, The University of Birmingham, Edgbaston, Birmingham, UK. Electronic address: a.m.shields@bham.ac.uk.
5 Occupational Health Service, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2WB, UK. Electronic address: alastair.robertson@uhb.nhs.uk.
6 University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2WB, UK; Clinical Immunology Service, Institute of Immunology and Immunotherapy, The University of Birmingham, Edgbaston, Birmingham, UK. Electronic address: alex.richter@uhb.nhs.uk.
7 University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2WB, UK; Health Data Research UK, University of Birmingham, Edgbaston, Birmingham, UK. Electronic address: simon.ball@uhb.nhs.uk.