1. National Reference Centre for Enteric Viruses, University Hospital of Dijon, Dijon, France
2. Laboratory of Infectious Agents and Hygiene, University Hospital of Saint-Etienne, Saint-Etienne, France
3. Laboratory of Biology, Hospital of Charleville-Mézières, Charleville-Mézières, France
4. Epidemiology and Infection Control Unit, University Hospital of Dijon, Dijon, France