1. French Institute of Public Health, Department of Coordination of Alerts and Regions, Regional office in Aquitaine, Bordeaux, France
2. National Reference Centre (NRC) for anaerobic bacteria and botulism, Institut Pasteur, Paris, France
3. Périgueux Hospital Centre, Intensive care unit, Périgueux, France
4. European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
5. French Institute of Public Health, Department of Infectious Disease, Saint-Maurice, France