1 Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties "G D'Alessandro,"University of Palermo, Palermo, Italy; Infectious and Tropical Disease Unit, AOU Policlinico "P. Giaccone", Palermo, Italy; Checkpoint Palermo Fast-Track City, Casa dei Diritti, Palermo, Italy.
2 Infectious and Tropical Disease Unit, AOU Policlinico "P. Giaccone", Palermo, Italy; Checkpoint Palermo Fast-Track City, Casa dei Diritti, Palermo, Italy.
3 Microbiology and Virology Unit- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties "G D'Alessandro," University of Palermo, Palermo, Italy.
4 Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties "G D'Alessandro,"University of Palermo, Palermo, Italy; Infectious and Tropical Disease Unit, AOU Policlinico "P. Giaccone", Palermo, Italy; Checkpoint Palermo Fast-Track City, Casa dei Diritti, Palermo, Italy. Electronic address: antonio.cascio03@unipa.it.