University of Liverpool - Institute of Infection and Global Health, University College London - UCL Queen Square Institute of Neurology, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Encephalitis International, Alder Hey Children's NHS Foundation Trust, Tropical and Infectious Diseases Unit, Royal Liverpool and Broadgreen University Hospitals NHS Trust, Liverpool, UK, Government of the United States of America - Division of High Consequence Pathogens and Pathology and University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences

University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, University of Liverpool, University of Liverpool - Department of Clinical Infection, Microbiology and Immunology, University College London - UCL Queen Square Institute of Neurology, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Wayne State University, University of São Paulo (USP) - Institute of Tropical Medicine, King Saud University, University of Brescia - Department of Clinical and Experimental Sciences, Institute of Post-Graduate Medical Education and Research - Bangur Institute of Neurosciences, Department of Neurology, National Neuroscience Institute, World Health Organization (WHO) - Brain Health Unit, King’s College London, Government of the United States of America - Division of High Consequence Pathogens and Pathology, University of Liverpool, University of Liverpool, University of Liverpool and University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences

University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Christian Medical College, National Institute of Mental Health and Neuro Sciences, Universidade Federal de Pernambuco (UFPE), Christian Medical College, Christian Medical College, Hospital das Clinicas, Hospital da Restauração, National Institute of Mental Health and Neurosciences (NIMHANS), University of Liverpool - Institute of Population Health Sciences, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Christian Medical College, Christian Medical College, Indira Gandhi Institute of Child Health, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Kamuzu University of Health Sciences, Childhood Acute Illness and Nutrition Network, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Sri Devaraj Urs Academy of Higher Education and Research, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Kamuzu University of Health Sciences, Kamuzu University of Health Sciences, Universidade Federal de Pernambuco (UFPE) - Oswaldo Cruz Foundation Pernambuco, National Institute of Mental Health and Neuro Sciences, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Malawi - Malawi-Liverpool-Wellcome Trust Clinical Research Programme, National Institute of Mental Health and Neuro Sciences, University of Oxford, - Oswaldo Cruz Institute, Government of the United States of America - National Center for Emerging and Zoonotic Infectious Diseases, World Health Organization (WHO), University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Christian Medical College, Correia Picanco Hospital, Liverpool School of Tropical Medicine, Encephalitis International, Alder Hey Children's NHS Foundation Trust, University of Birmingham, National Institute of Mental Health and Neuro Sciences, Leeds Teaching Hospitals NHS Trust, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Kamuzu University of Health Sciences, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Liverpool School of Tropical Medicine, National Institute of Mental Health and Neurosciences (NIMHANS) - Department of Neurovirology, University of Liverpool - Institute of Population Health Sciences, Independent, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Universidade Federal de Pernambuco (UFPE) - Oswaldo Cruz Foundation Pernambuco, National Institute of Mental Health and Neuro Sciences, Christian Medical College - Department of Infectious Diseases and University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences