1. National Reference Centre for Botulism, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità (ISS), Rome, Italy
2. These authors contributed equally to this work
3. Poison Control Centre and National Toxicology Information Centre, IRCCS Maugeri Foundation Hospital, Pavia, Italy
4. Histology and Molecular Biology Unit, Section Two, Army Medical and Veterinary Research Centre, Rome, Italy
5. PENTA - The Joint Laboratory on Models and Methodology to Predict and Manage Large Scale Threats to Public Health, International Affairs Unit, Istituto Superiore di Sanità (ISS), Rome, Italy