1 Divisions of Infectious Diseases II and Immunology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy. Electronic address: mario.mondelli@unipv.it.
2 Infectious Diseases I, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy.
3 Infectious Diseases I, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
4 Microbiology and Virology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Clinical, Surgical, Diagnostic, and Paediatric Sciences, University of Pavia, Pavia, Italy.