1 Infectious Diseases Unit, ASST "Papa Giovanni XXIII", Bergamo, Italy. Electronic address: [email protected].
2 Infectious Diseases Unit, ASST "Papa Giovanni XXIII", Bergamo, Italy.
3 Ophtalmology Unit, ASST "Papa Giovanni XXIII", Bergamo, Italy.
4 Department of Clinical, Surgical, Diagnostics, and Pediatric Sciences, University of Pavia, Pavia, Italy; Microbiology and Virology Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.