1. Viroscience department, Erasmus MC, Rotterdam, the Netherlands
2. Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
3. European Centre for Disease Prevention and Control, Solna, Sweden
4. German Centre for Infection Research (DZIF), Berlin, Germany
5. Charité - Universitätsmedizin Berlin Institute of Virology, Berlin, Germany
6. Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
7. Unité des Virus Emergents (Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection), Marseille, France