Dear Colleagues, On behalf of the organising committee, I welcome you to the 7th Summer School of Immunology, which will be held in picturesque Porto Heli. The organising committee has prepared a first-rate scientific program with outstanding speakers from Universities and Research Institutes worldwide. As in the previous years, our aspiration is the exchange of knowledge between students and lecturers and the forging of new research ideas through intense interaction. More information can be found on the 7th SSoI website http://www.immunologysummerschool2019.gr/ >> Our aims will be accomplished through teaching lectures, research lectures, short student presentations and our notoriously vibrant poster sessions. We are confident that our 7th Summer School will be a success and will build long-lasting relationships between established and forthcoming leaders in Immunology. Professor Athanasios Tzioufas Department of Pathophysiology, Medical School National and Kapodistrian University of Athens