Professor Dr. Tomasz Stadejek graduated from the Veterinary Faculty of the University of Life Sciences in Lublin, Poland in 1990. From 1991 to 2011 he worked at the Department of Swine Diseases of the National Veterinary Research Institute in Pulawy, Poland where was awarded a PhD (1996) and a DSc (2002). In 2007 Prof. Stadejek was nominated by the World Organization for Animal Health (OIE) as an expert for PRRS, and in 2007-2011 he was the head of the OIE Reference Laboratory for PRRS. He is a member of Arterivirus Study Group of the International Committee for Taxonomy of Viruses. In 2008 he obtained diploma of the European College of Porcine Health Management and in 2011 to 2013 he was a board member of the college. Since 2012 he is full professor of the Faculty of Veterinary Medicine at the Warsaw University of Life Sciences, at the Department of Pathology and Veterinary Diagnostic. Current research is focused on the genetic and antigenic diversity of European genotype PRRSV and its impact on sensitivity and specificity of diagnostic methods and on efficacy of methods to control the disease. He is a co-author of more than 60 scientific papers published in peer reviewed journals.