1 Institute of Global Health, Faculty of Medicine, University of Geneva, CH-1202, Geneva, Switzerland. Electronic address: antoine.flahault@unige.ch.
2 HIV/AIDS Unit, Division of Infectious Diseases, University Hospitals of Geneva and University of Geneva, Geneva, Switzerland; University Hospitals of Geneva and University of Geneva, Geneva, Switzerland.
3 French Academy of Sciences and Institut Pierre Louis d'Epidémiologie et de Santé Publique, Sorbonne Université, INSERM Paris, France.
4 National Medical Research Center for Therapy and Preventive Medicine of the Ministry of Health of the Russian Federation, Moscow, Russia.
5 Geneva Centre for Emerging Viral Diseases, University Hospitals of Geneva and University of Geneva, Geneva, Switzerland.
6 Department of Anthropology and The Vaccine Confidence Project, London School of Hygiene & Tropical Medicine, London, UK; University of Antwerp, Antwerp, and KULeuven, Leuven, Belgium.
7 Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore; Imperial College London, London, UK; George Institute for Global Health UK, London, UK.
8 School of Civil Engineering, University of Leeds, Leeds, UK.
9 Global Health Center, Graduate Institute for International Affairs and Development, Geneva, Switzerland.
10 WHO Regional Office for Europe, UN City, Copenhagen, Denmark.