[The phenomenon of large-area asynchronism in epizootic manifestations of plague and the optimization of the epidemiological surveillance of this infection in the northwestern Caspian Sea region].

The studies were undertaken in the northwestern Caspian Sea region, the European part of Russia, which is noted for high plague epidemic rates. An analysis of many-year data from the plague institutions has established a unique phenomenon which is characterized by asynchronous epizootic functioning of 2 large-scale sandy and steppe foci undivided by physical borders. Great possibilities of differential prophylactic measures and optimization of plaque epidemiological surveillance, which are the basis for predicting the epizootic and epidemiological situation with higher confidence by applying various tactic and methodological techniques, efforts, and facilities on a substantiated bases through its implementation are associated with the phenomenon of large-area asynchronism.