1. III Division of Infectious Diseases, Luigi Sacco Hospital, ASST Fatebenefratelli Sacco, 20157 Milan, Italy
2. Department of Biomedical Sciences and Clinics, Università degli Studi di Milano, 20157 Milan, Italy
3. Intensive Care Unit, ASST Fatebenefratelli Sacco, 20157 Milan, Italy
4. I Division of Infectious Diseases, Luigi Sacco Hospital, ASST Fatebenefratelli Sacco, 20157 Milan, Italy
5. Clinical Microbiology, Virology and Bioemergency, Luigi Sacco Hospital, ASST Fatebenefratelli Sacco, 20157 Milan, Italy
6. Infectious Diseases Unit IRCCS, Policlinico Sant’Orsola, Department Medical Surgical Science, University of Bologna, 40138 Bologna, Italy