Marcello Mario D'Errico (MD) is a full professor of Hygiene and Preventive Medicine at the Department of Biomedical Sciences and Public Health, Section of Hygiene, Preventive Medicine and Public Health, Polytechnic University of the Marche Region, Ancona, Italy. He is also the Chief of the Department of Hospital Hygiene at "Azienda Ospedaliero Universitaria delle Marche". His research interests focus on public health, infection control, antibiotic resistance, preventive medicine, hospital-acquired infection, and epidemiology.