1. Public Health Office , Local Health Unit 2 Marca Trevigiana, Treviso, Italy
2. Department of Medical, Surgical and Experimental Sciences, University of Sassari, Sassari, Italy
3. Epidemiology Office, Local Health Unit 2 Marca Trevigiana, Treviso, Italy
4. Department of Infectious Diseases, National Health Institute (Istituto Superiore di Sanità), Rome, Italy
5. University Cattolica del Sacro Cuore, Rome, Italy
6. European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
7. Department of Radiology, Oderzo Hospital, Local Health Unit 2 Marca Trevigiana, Treviso, Italy
8. Department of Microbiology, Treviso Hospital, Local Health Unit 2 Marca Trevigiana, Treviso, Italy
9. Department of Infectious Diseases, Treviso Hospital, Local Health Unit 2 Marca Trevigiana, Treviso, Italy
10. Department of Pediatrics, Oderzo Hospital, Local Health Unit 2 Marca Trevigiana, Treviso, Italy
11. Hygiene and Public Health Unit, University of Padua, Padua, Italy
12. Prevention Department, Veneto Regional Health Authority, Venice, Italy