[1
]Department of Virology; Royal Free NHS Foundation Trust; London UK
[2
]Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine;
Ghent University; Ghent Belgium
[3
]Instituut of Tropical Medicine (ITM); Antwerp Belgium
[4
]Institute of Health and Society (IRSS); Université Catholique de Louvain; Brussels
Belgium
[5
]Institute for Global Health; University College London; London UK
[6
]Department of Public Health and Surveillance; Scientific Institute of Public Health
(WIV-ISP); Brussels Belgium