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The aim is to analyze the long-term results of the avian influenza virus surveillance monitoring of influenza virus in birds of one of the key Northern Eurasia points Lake. Uvs Nuur, the Republic of Tyva. Methods. The analysis of the available sources and our own research results is conducted. We used MEGA 5.2 software to construct a phylogenetic dendrogram. Tree topology is constructed by the method of maximum likelihood. Genetic distance matrix is calculated using the Kimura two-parameter metric method. Results. We conducted a biogeographical analysis of the Great Lakes basin, and an overview of the literature and the original results of highly pathogenic H5N1 influenza circulation and molecular epidemiology at Uvs Nuur Lake. Conclusion. Long-term observations at Lake Uvs Nuur revealed the important role of the biogeocoenose for the preservation and evolution of influenza A virus in wild bird populations. Planned ecological and virological monitoring is the basis for correct conclusions about the dynamics of epizootic process, infection control, as well as for the evaluation of the epidemic and pandemic potential of novel viral strains.