University of Southampton, Newcastle University, University of Liverpool - Institute of Infection and Global Health, Government of the United Kingdom - Chelsea and Westminster Hospital NHS Foundation Trust, King’s College London - Institute of Psychiatry, Psychology and Neuroscience, University of Utah - Department of Medicinal Chemistry, Newcastle University, Encephalitis Society, King’s College London - Institute of Psychiatry, Psychology & Neuroscience (IoPPN), University College London, University of Cambridge, University College London, University of Edinburgh, University of Cambridge - Division of Anaesthesiology, King’s College London, University College London, University of Edinburgh, University of Manchester, University of Oxford, University of Liverpool - Institute of Infection and Global Health, University of Liverpool, University College London, Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, UK, Newcastle University and University of Liverpool - Institute of Infection and Global Health