[Changes in the Conception of the Course of Tuberculosis: (author's transl)]

In our sphere of life the picture of tuberculosis has altered. Infections in children have become less severe and considerably rarer. The chronic tuberculosis of age is decreasing. The reasons for the change in the course of tuberculosis are to be found in an increasing power of resistance of the body produced by better social hygienic conditions, a better immunological defense and the institution of modern therapy. Tuberculosis should only be subdivided into primary and post-primary stages with the possibility of spreading through local progressiveness to lymphadenobronchogenic and hematogenic pathways.