Epidemiological diagnosis is the basis for studying the causes and patterns of the spread of both infectious and non-infection pathology, t. k. is a universal method of studying cause-and-effect relationships. The subject of these studies is the study of the causes and patterns of the development of diseases, including factors of hereditary predisposition, depending on both certain biological (genetic) and social conditions. Epidemiological methods are a set of techniques that allow you to identify and study specific risk factors for the development and spread of all forms of pathology, establish the mechanism of their action, assess the causes of a disease and develop a system of prof.