ON THE ISSUE OF PLAGUE MICROFOCALITY IN PLAINS OF KAZAKHSTAN AND CENTRAL ASIA

The article considers the most important stage of s tudying the natural foci of the plague – the possi- ble existence of exotics in the form of multiple microfoci. For an objective assessment of plague epizootics, the formal method of square net or degree fields is used. The initial data (the place of isolati on of the plague pathogen from ro- dents and their ectoparasites) are plotted not on a specific "point", but in that square of the coordinate grid where this "point" is located. Each square or sector is 10.0 thousand hectares. In total, 14 microfoci with tot al area of 3683.0 thousand hectares were identified in 10 natural and autonomous foci of the plague. Of these, I - order cores, in which the epizootic process is less intense, have an area of 3,343.0 thousand hectares, and the II - order cores with the highest intensity of epizootics – 340.0 thousand hectares. The ratio of nuclei is about 10 : 1. In addition, a new hypothesis of the exogenesis of natural focal infections, proposed in terms of population genetics, is being discussed.