Dr. Lioznov is an infectious disease specialist and his scope of scientific interests includes influenza and other respiratory infections in individuals with altered immunity or resistance. Details and achievements:  member of the Infectious Disease Special Commission, Russian Ministry of Health; Presidium of the Association of Infectious Disease Specialists (St. Petersburg and Leningrad Region); Presidium of the Russian Red Cross (St. Petersburg Branch); member of editorial boards (Journal of Infectious Disease; HIV Infection and Immunosuppression; Science Letters of the Pavlov First St. Petersburg State Medical University; Clinical Laboratory Consultation). Dr Lioznov is the author or co-author of more than 200 scientific publications and teaching aids, including textbooks on infectious disease and clinical guidelines. His honors include Presidential Fellow (1998), Gratitude of the the Russian Ministry of Health (1999), and Gratitude of the President (2016).