[Environmental epidemiologic research as the basis for organizing health inspection].

In the practical work of hygiene guideline and limitation values derived from animal experiments are used. The necessity to verify their validity and applicability by environmental epidemiologic research is pointed out. The close relationship between epidemiological research and practice of hygiene in the GDR is demonstrated by examples.

[Epidemiological surveys of formaldehyde and nitrogen dioxide levels in indoor air].

The influence of HCHO and NO2 on clinical, haematological, immunological, sensory and lung function parameters were tested in 129 children out of 3 classes. As part of a biological monitoring programme formic acid content in urine was determined. Concentration of the pollutants in indoor air was measured by means of passive samples.

[Epidemiologic study of indoor formaldehyde and nitric oxide pollution].

The authors report on some selected results of an 87-pilot study, by means of which has been started to analyse the influence of formaldehyde, nitrogenous oxide and tobacco smoke on school children visiting 3. classes in old and new buildings in their schools and dwellings.