1. Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
2. National Institute for Infectious Diseases Lazzaro Spallanzani IRCCS, Rome, Italy
3. Local Health Unit Roma 2, Rome, Italy
4. Department of Infectious Diseases, National Institute of Health, Rome, Italy
5. Department of Infectious Parasitic and Immune-mediated Diseases, National Institute of Health, Rome, Italy