Infodemiology and infoveillance in ONE public health - Eastern European Perspective Andrzej Jarynowski 1,2 , Eleftherios Meletis 3 , Maja Romanowska 4 , Alexander Semenov 5 , Stanisław Maksymowicz 6 , Ireneusz Skawina 1,7 , Polychronis Kostoulas 3 , Vitaly Belik 2 Polish Hygienic Society, Wrocław, Poland Systems Modelling Group, Institute of Veterinary Epidemiology and Biostatistics, Freie Universität Berlin, Germany Faculty of Public and One Health, School of Health Sciences, University of Thessaly, Karditsa , Greece Infection Prevention Institute, Warsaw, Poland Department of Industrial and Systems Engineering, University of Florida , USA School of Public Health, Collegium Medicum , University of Warmia and Mazury , Olsztyn, Poland Polish Sanitary Inspection, Świdnica, Poland