Ryszard Międzybrodzki (MD, PhD) have been working at the Hirszfeld Institute of Immunology and Experimental Therapy of the Polish Academy of Sciences in Wroclaw, Poland (since 1996) as a researcher, and a physician. There he conducts both preclinical studies on bacteriophage application in the treatment of bacterial infections at the Bacteriophage Laboratory as well as experimental phage therapy in humans at the Phage Therapy Unit – the first phage therapy dedicated center in EU in which over 750 patients were treated so far. Since 2013 he has been also working at the Department of Clinical Immunology of the Medical University of Warsaw. He organized and conducted postgraduate training of Polish and foreign physicians, and courses in phage therapy for students. Moreover, between 2003 and 2012, he conducted researches on isolation, culture and clinical application of human olfactory ensheathing cells and he was a member of a scientific team honored for “Functional regeneration of spinal cord in a patient with its complete injury following intraspinal transplantation of autologic olfactory ensheathing cells” by the Polish Prime Minister’s 3rd Award in 2015. He has published over 100 articles and was a co-editor of two books in majority related to the therapeutic phage application including his main fields of interest: the possibilities of the phage use in the treatment of bacterial infections in humans (bioavailability and safety of the phage application) and new directions of clinical use of bacteriophages (anti-inflammatory and immunomodulating phage effects). Since 2022 he has been a manager of the project founded by the Polish Medical Research Agency which aim is to conduct a non-commercial clinical trial to confirm the safety and effectiveness of phage therapy in the treatment of chronic rhinosinusitis – RHINOPHAGE.