1. Research Laboratory for Vector-borne Diseases, National Reference Laboratory for Hantavirus Infections, Brussels, Belgium
2. Scientific Institute of Public Health, Brussels, Belgium
3. Institut National de Veille Sanitaire, Saint Maurice, Paris, France
4. Centre National de Référence des Fièvres Hémorragiques (National Reference Laboratory for Viral Haemorrhagic Fevers, CNRFH), Lyon, France
5. Department of Infectious Disease Epidemiology, Robert Koch-Institut, Berlin, Germany
6. Virology Division, Erasmus Medical Center, Rotterdam, the Netherlands
7. Rijksinstituut voor Volksgezondheid en Milieu (National Institute for Public Health and Environment, RIVM), Bilthoven, the Netherlands
8. Laboratoire National de Santé, Luxembourg, Grand Duchy of Luxembourg