1 Infectious Diseases I, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi 19, 27100 Pavia, Italy.
2 Department of Clinical, Surgical, Diagnostic, and Paediatric Sciences, Medical School University of Pavia, Viale Brambilla 74, 27100 Pavia, Italy. Electronic address: giovanna.ferraioli@unipv.it.