1. Department of Microbiology, LHUB-ULB, Université libre de Bruxelles, Brussels, Belgium
2. Centre for Environmental Health and Occupational Health, School of Public Health, Université libre de Bruxelles, Brussels, Belgium
3. Scientific Directorate of Epidemiology and Public Health, Sciensano, Brussels, Belgium
4. Faculty of Medicine and Pharmacy, Université de Mons, Mons, Belgium
5. European Plotkin Institute for Vaccinology (EPIV), Faculty of Medicine, Université libre de Bruxelles, Brussels, Belgium
6. Division of Infection and Immunity, Faculty of Medical Sciences, University College London, London, UK
7. Clinical Research and Innovation Unit, LHUB-ULB, Université libre de Bruxelles, Brussels, Belgium