Olivia Keiser is an SNF professor in epidemiology at the Institute of Global Health (IGH), at the University of Geneva. She studied biology in Basel, and then moved to Lausanne where she worked for the Swiss HIV Cohort Study. In 2006, Olivia joined the University of Bern, where her PhD work focused on analysing HIV infected patients in Africa. After receiving an SNF Professorship in 2017, Olivia moved with her group to Geneva. Her research group takes an interdisciplinary approach that combines mathematical modelling (including cost-effectiveness analyses), analyses of cohort data, data- and text mining, systematic reviews, and qualitative research techniques. The current focus is on HIV and COVID-19.