1 Department of Infectious Diseases, Luigi Sacco University Hospital, ASST Fatebenefratelli Sacco, 20157 Milan, Italy. Electronic address: moschese.davide@asst-fbf-sacco.it.
2 Department of Infectious Diseases, Luigi Sacco University Hospital, ASST Fatebenefratelli Sacco, 20157 Milan, Italy.
3 Laboratory of Clinical Microbiology, Virology and Bioemergencies, Luigi Sacco University Hospital, ASST Fatebenefratelli Sacco, 20157 Milan, Italy.