Dr Paolo Bonanni is a Full Professor of Hygiene in the Faculty of Medicine and the Director of the Specialization School for MDs in Hygiene and Preventive Medicine at the University of Florence, Italy. Professor Bonanni’s scientific activity has covered the epidemiology and prevention of infectious diseases, particularly viral hepatitis, diphtheria, tetanus, pertussis, influenza, measles, rubella, varicella, and, most recently, bacterial invasive diseases and human papillomavirus, including clinical trials and economic valuation of vaccination strategies.