1. Department of Infectious Parasitic and Immune-Mediated Diseases; National Reference Laboratory for Measles and Rubella; National Institute of Health; Rome Italy
2. Laboratory of Virology; National Institute for Infectious Diseases “L. Spallanzani”; Rome Italy
3. Department of Biomedical Science and Human Oncology; Aldo Moro University of Bari; Bari Italy
4. DIMES, Operative Unit of Clinical Microbiology; Laboratory of Virology St. Orsola-Malpighi General Hospital; University of Bologna; Bologna Italy
5. Department of Biomedical Sciences for Health; University of Milan; Milan Italy
6. Department of Microbiology and Virology, Molecular Virology Unit; Fondazione IRCCS Policlinico San Matteo; Pavia Italy
7. DiSSal; University of Genoa and IRCCS; Genoa Italy
8. Infectious Diseases Epidemiology Unit; National Institute of Health; Rome Italy
9. Infectious Diseases and International Prophylaxis Office; Ministry of Health; Rome Italy