1. Department of Infectious Diseases, Istituto Superiore di Sanità, 00162 Rome, Italy
2. Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy
3. Department of Statistics, Sapienza University of Rome, 00185 Rome, Italy
4. Management and Health Laboratory, Institute of Management—Department EMbeDS, Sant’Anna School of Advanced Studies, 56127 Pisa, Italy
5. Policlinico Riuniti Foggia Hospital, Hygiene Unit, Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
6. Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Excellence Specialties “G. D’Alessandro”, University of Palermo, 90127 Palermo, Italy
7. Ministry of Health, Directorate General Health Prevention, Communicable Diseases and International Prophylaxis, 00144 Rome, Italy