EN
The author discusses Kozar's point of view as to the question of definition of the notion „anthropozoonosis" and the epidemiological division of parasitic anthropozoonoses into main groups, as suggested by Kozar. Assuming that the epidemiological criteria of the classification of parasitic diseases should be in accordance with general biological principles obligatory in this regard, the author suggests that the only right definition of the anthropozoonosis parasite should be first of all based on a fundamental etiological (and at the same time epidemiological) element of the invasive diseases, i. e. on the animal as the source of infection for man. In the subsequent part of this work the author, basing on Kozar's interpretation of the phenomenon of specificity of the parasites, and the criterion, admitted by himself, to consider the invasive disease as anthropozoonosis (animal organism as source of parasitic invasion for man), is of the opinion that invasions of such parasites as T. solium or T. saginatus (very specific for man) should be consequently considered as strict (incontestable) anthropozoonoses, others however, in the course of which the specificity is less distinct - as relative anthropozoonoses. Such a division, being in accordance with the biological premises mentioned above, has also a practical importance in the analysis of epidemiological processes as well as in the practical work on finding new methods for eradication of invasive anthropozoonoses. When discussing the localization of parasites in the organisms of hosts and further, the problem of vectors and intermediate hosts, the author emphasizes the significance of the focus problem of many parasitic anthropozoonoses for better comprehension of the evolutional interdependence between the organisms of parasite and host, which doubtless are one of the expressions of unity of the animal world with man.