"Infectious Diseases" Department is one of the departments of Medical University which had an oldest history. In other words, history of this department begins from the establishment of university. "Infectious Diseases" Department began its activity as a course in the beginnings of last century. So, "Course on infectious diseases" was organized and began its activity under supervision of professor N.G.Ushinski who was the student of S.P.Botkin under "Medicine" Faculty of Baku State University in 1928. In 1930 "Infectious Diseases" Department was established by M.Z.Mgebrov after the establishment of Medical Institute in Baku. After a short period of time B.H.Gayibov, Labour Veteran, Honoured Doctor of the Republic was commissioned with administration of department in connection with death of professor M.Z.Mgebrov in 1934. Teaching of subject "Infectious diseases" in Azerbaijani language began just with the help of his great efforts and activity. B.H.Gayibov has undeniable services in the field of preparation and realization measurements of struggle against several infectious diseases spread widely at that time in the Republic. He also prepared materials in written in Azerbaijani about separate infectious diseases and these were used in training the subject. Though the staff of the department was few at that time, training was carried out persistently, special attention was paid to detailed study of infectious diseases (brucellosis, viral hepatitis, variola vera, intestinal diseases) by students. From 1941 department was led by Honoured Scientist, Professor M.H.Safaralibayov. For the reason that hospital named after Semashko in Baku city acted as military hospital during Great Patriotic War (1941 - 1945) collaborators of infectious diseases department creating in the base of this hospital didn't deny their labour in making plans and measures in struggling with these diseases, in struggling with military infection. From 1968 professor L.A.Mahmudbayov had been the chief of department for nearly four years and in this period number of collaborators increased, scientific researches about various infectious diseases expanded much more. In 1972 leadership of department was intrusted G.M.Imamaliyeva. In this period department t got into scientific contact with medical institutes of post Soviet Union Republics (Moscow, Leningrad, Kiev), obtained and used methodical materials for teaching. Taking into consideration the lack of manual and educational supplies on infectious diseases in these years professor G.M.Imamaliyev, senior lecturer B.Mahmmudova, senior lecturer N.Aliyev from collaborators of department prepared training methodical appliances about various nozological forms on this subject and were used in teaching in succession. From 1984 professor A.Y.Najafov acted as chief of department. During this period two professors, five senior lecturers, nine assistants acted in the line of collaborators of department and were occupied with academic work. On this eve (1988) collaborator of department, leader of Infectious Diseases Centre of Republic, senior lecture N.N.Aliyev defended thesis for a Doctor's degree, obtained academic rank. Taking into consideration importance of necessity of manuals of students of Medical Institute on infectious diseases in this period collaborators of department, senior lecture B.Mahmudova and S.H. Mammadov translated "Infectious Diseases" book with great voluminous (470 pages) by professor Y.P.Shuvalova published in Moscow and meant as manual for students of Medical Institute into Azerbaijani. On noted eve scientific-research work on parasitic diseases (malaria, leishmania, helminthiasis) by A.Y.Najafov and on intestinal infection, virus hepatitis, brucellosis etc. direction by N.N.Aliyev and their results were significant gifts of Azerbaijanian scientists for medical science and learning infectious diseases on scientific basis. From 1990 professor N.N.Aliyev started his activity as chief of department and on this eve he was leader of Infectious Diseases Centre of Republic as well as. Plan of large complex scientific-research work about infectious diseases considering local pathology for Azerbaijan Republic was prepared and fulfilled much work in this direction under his leadership. In 1987 intestinal disease (yersinioz) was found in Azerbaijan for the first time by N.N.Aliyev. Scientific-research work of professor N.N.Aliyev and collaborators of department led by him on diagnosis and treatment of several infectious diseases was applied on health practice in succession. So that, application of sensor indication on dysentery, typhoid, meningokokk infection, intestinal disease (yersinioz), virus hepatitis, botulism etc. application of proctoinhalation on salmonellosis, dysentery etc. application of magnetotherapy on diagnosis and treatment of dysentery, typhoid, virus hepatitis, salmonellosis, meningokokk infection, tropical ulcer, intestinal disease (yersinioz) etc. born benefit and methodic recommendations, methodic instructions and many rationalization proposals were prepared. From 1991 till that time collaborators of department under N.N.Aliyev's leadership prepared methodical work for teaching process about all contents on infectious diseases subject not existing in department. At the same time preparation of curriculum in Azerbaijani language for the first time was come across only in this period. After obtaining sovereignty of our Republic being leader in the line of departments of Universities in 1992 for the first time in history of department "Infectious Diseases" manual with great voluminous (600 pages) by N.N.Aliyev with the joint authors (senior lecture M.M. Mukhtarov and so on.) for students of Azerbaijan Medical Institute in the gryphon of Healthcare Ministry of Republic was published in several thousands circulations and was given for use of students for a long time. It is more honest to eliminate special period, special stage in history of department N.N.Aliyev's leading on dissertation work, his hard work on preparing young scientist, pedagogue, and scientific worker during the period of his leadership. If we have a look at history of department, it is possible to see that total number of dissertation work until 1990 is less than the work since that time up today. From 1994 professor N.N.Aliyev is director of NSRM Prophylaxis Institute, chief of Scientific-Prophylactic Society of Republic infectiologists, General infectiologist of Healthcare Ministry of Republic, Honoured Scientist, Honoured doctor of Republic, Associate Member of NSA, direct member of Russia MSA. At present Infectious diseases department have close scientific relations with Medical Universities of foreign countries (Russia, USA), medical scientists and specialists under N.N.Aliyev's leadership. Five dissertation of candidacy and four theses for a Doctor's degree are continuing in department under acad. N.N.Aliyev's leadership who is occupied with pedagogical and scientific-practice activity and led department more than 20 years. Hundreds of scientific articles, a manual, three curriculums, four educational supplies, nine monographs, tens of methodical recommendations and instructions, several rationalization proposals and inventions were prepared and applied on teaching and healthcare practice. It has been already long time collaborators of department have been continuing scientific work on the subject of complex scientific-research work under acad. N.N.Aliyev's supervision. Obtained many pedagogical and scientific-practice achievements are applied on healthcare practice. From many collaborators of department senior lecture Mukhtarov M.M. is responsible on scientific work, member of University Problem Commission, Approbation Council, Administrative personnel of Scientific-Prophylactic Society of Republic infectiologists. Senior lecture Isayev J.P. is member of Defense Council of University and deputy of dean. Senior lecture Valiyev A. is member of Defense Council of University. Senior lecture Hasanzade N. and Azizbayov N.Kh. are members of Administrative personnel of Scientific-Prophylactic Society of Republic infectiologists. Senior lecture Orujova E.G. is member of Administrative personnel of Scientific-Prophylactic Society of Republic infectiologists and Approbation Council of University. Assistant Abdullayev O.A. is secretary of Scientific-Prophylactic Society of Republic infectiologists. Senior lecture Aliyeva G.Z., Senior lecture Khudaverdiyeva N., Senior lecture Omarova Z. , c.m.s. Huseynova S., c.m.s. Atakishiyeva S., c.m.s. Mammadova M. (she is also chief of teaching part) are members of Approbation Council of University. Collaborators of Infectious diseases department holding leading place in the line of the greatest clinic departments in Azerbaijan Medical University try resolutely in fulfillment of innovation in teaching process , in conducting scientific research purposely and in scientific-medical practical activity, constructive help healthcare, administrative healthcare and social work.