1. Department of Infectious and Tropical Diseases Toulouse University Hospital Toulouse France
2. Department of Medical Pharmacology, CIC 1436 Toulouse University Hospital Toulouse France
3. Department of Hematology Pitié‐Salpêtrière Hospital, Sorbonne University Paris France
4. HIV/AIDS Clinical Unit National Institute for Infectious Disease "L. Spallanzani" Rome Italy
5. Department of Neurology Medical Center, University of Freiburg Freiburg Germany
6. Department of Neurology University Hospital Bonn Bonn Germany
7. Department of Nephrology and Organ Transplantation CHU Rangueil Toulouse France
8. Toulouse Institute for Infectious and Inflammatory Diseases (Infinity) INSERM UMR1291, CNRS UMR5051, Toulouse III University Toulouse France
9. Neuroimmunology and Multiple Sclerosis Research Section, Department of Neurology University Hospital Zurich and University of Zurich Zurich Switzerland
10. Clinical Neuroimmunology and Neurochemistry, Department of Neurology Hannover Medical School Hannover Germany
11. Unit of Rehabilitation of Neuroviral Diseases Bicêtre Hospital, APHP Le Kremlin‐Bicêtre France
12. INSERM U1186 Paul Brousse Hospital, Paris Saclay University Villejuif France
13. Department of Neurology University Hospital of Cologne Cologne Germany
14. Department of Neurology, Institute of Translational Neurology University Hospital Münster Münster Germany
15. Department of Neurology Barts Health NHS Trust and Queen Mary University of London London UK
16. Department of Neurology Technical University of Munich Munich Germany
17. Department of Neurology University Hospital of Liège Liège Belgium
18. Department of Infectious and Tropical Diseases Lyon University Hospital Lyon France
19. Amsterdam University Medical Center University of Amsterdam Amsterdam the Netherlands
20. Department of Neuroscience Amsterdam University Medical Center Amsterdam the Netherlands
21. Department of Neurology Washington University in St Louis St Louis MO USA
22. Experimental Immunotherapeutics Unit National Institute of Neurological Disorders and Stroke Bethesda MD
23. European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group on Infections of the Brain (ESGIB) Basel Switzerland