[1] University Department of Infectious and TropicalDiseases,Post
[2] University of Brescia,graduate school of Public Health
[3] University of Brescia,Laboratory of Innovations in Therapies, Education and Bioproducts (LITEB)
[4] Oswaldo Cruz Institute (IOC),Clinic of Obstetrics and Gynaecology
[5] FioCruz,Laboratory of Microbiology
[6] University of Brescia,Unit of Hygiene, Epidemiology and Public Health
[7] Spedali Civili General Hospital,undefined
[8] University of Brescia,undefined