[The role of birds in the maintenance of tick-borne infections in the Tomsk anthropurgic foci].

The role of birds in the focus of tick-borne infections was studied from 2006 to 2011. The frequency index of ticks carried by ground dwelling birds is about 49.7%.

[New data on the phylogeography and genetic diversity of the brown bear Ursus arctos Linnaeus, 1758 of northeastern Eurasia (mtDNA control region polymorphism analysis)].

An analysis of polymorphism of the fragment of the control region of mitochondrial DNA of 53 tissue samples of the brown bear Ursus arctos from several regions of the eastern part of Russia was carried out. It was found that most of the described haplotypes belong to cluster 3a, the most common in Eurasia, and do not form regionally specific haplogroups. However, among the bears from Western and Eastern Siberia, as well as the island of Kunashir, three haplotypes were identified, which are close to the haplogroup typical of Eastern Hokkaido bears.

[Genetic diversity of ixodid tick-borne pathogens in Tomsk City and suburbs].

We studied two urban and two suburban biotypes of Tomsk City for tick-transmitted diseases prevalence in naturally collected ticks. Tick-borne encephalitis virus (TBEV) was found in 6.5% of tick samples, West Nile virus (WNV) in 2.