[Frequency and distribution of sarcoidosis in GDR, the County of Leipzig, and the District of Wurzen--a comparison].

The epidemiology of new cases of sarcoidosis in the county of Leipzig is analyzed on the base of the average incidence in the years 1972-1974. The development of sarcoidosis in the district of Wurzen is represented on the base of the new cases of the last 30 years (1950-1979). The districts of the county of Leipzig and the places (towns and villages) of the district of Wurzen are showing very different rates. In the district of Wurzen 19 villages among 37 places in all had not registered any case of sarcoidosis within the last 30 years. The author concludes from the distribution and the pattern of this disease in the course of time, that sarcoidosis must be regarded as a cyclic infections disease.