Liesbeth Borgermans1, Christian Perronne2, Ran Balicer3, Ozren Polasek4, Valerie Obsomer5. 1. Department of Family Medicine and Chronic Care, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium liesbeth.borgermans@vub.ac.be. 2. Infectious Diseases Unit, Hôpitaux Universitaires Paris-Ile de France-Ouest, Saint Quentin en Yvelines, France. 3. Epidemiology Department, Faculty of Health Sciences, Ben-Gurion University of the Negev, Israel. 4. Department of Public Health and Croatian Centre for Global Health, University of Split, Croatia Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, Edinburgh, UK. 5. Agriculture, Environment, Natural Resources and Environmental Risk Management, Public Service of Wallonia, Namur, Belgium.