| Abstract: | Studies on large samples of the population are an indispensable prerequisite for investigations into the validity and reliability of threshold levels stipulated for atmospheric pollutants purity under real conditions. Children represent suitable groups for such studies, also in the context of meaningful and effective prophylaxis. Epidemiological studies conducted over several years show that there are differences between the anthropometric, hematological and immunological parameters of subjects living in regions with major pollution loads and in so-called "clean air" regions. Conclusions are drawn regarding the work performed by national hygiene authorities, and a method is proposed for the continuation of epidemiological studies in qualitatively and quantitatively differently loaded regions as a contribution to establishing a uniform register of effects. |
