The scope and results of selected epidemiological studies conducted at the National Institute of Hygiene in the years 1945-1989.

The authors present the first article in the series concerning the scope ofresearch, scientific, practical, educational and other achievements of the National Institute of Hygiene (PZH) since 1945. This article is limited to discussing selected studies conducted in the field of epidemiology until the year 1989. The selection was based on PZH annual reports on the accomplishment of planned objectives and the literature positins listed in these reports, as well as other documents. The criterion for selection was how the scope of the research matched the epidemiological situation within a historical context. The authors chose research that yielded practical results which made an impact on the epidemiological situation, particularly concerning infectious diseases in Poland. The significance of epidemiological research of non-infectious diseases was also stressed. In addition, research that was considered by scientists in Poland and abroad as contributing to the development of medical methodology was included in the selection.