Cornelia Betsch is professor of health communication at the University of Erfurt, Germany. She is a trained psychologist. Her work aims at understanding principles of health behavior by applying a judgment and decision-making and strategic-interaction perspective to infectious disease control – especially with regard to the vaccination decision, emerging infections and prudent use of antibiotics. Her team, the Psychology and infectious Diseases Lab, develops techniques and tools to improve an unbiased vaccination decision, for example by debunking vaccination myths or countering vocal vaccine deniers. Cornelia’s credo is that research should aim at high understanding of the issue and, at the same time, high usability of the results. Therefore, she works with national and international health organizations to transfer research into practice and to foster evidence-based, behavioural insights-related decisions. Her research is funded by independent bodies.