| Summary: | Tomsk Region is one of the leading places in Russia for the dissemination of natural focal infections spread by ticks. In addition to known pathogens in recent years in the grip of steel spirochetes identify new species - Borrelia miyamotoi, which causes relapsing fever. For the first time that Borrelia has been isolated from the taiga tick in Japan (Fukunaga et al., 1995) and has since recorded over a wide geographical area of Eurasia and North America, including a number of regions of Russia. B. miyamotoi transmitted by the same tick species as Ixodes tick borreliosis pathogen B. burgdorferi.s.l. In the absence of a specific diagnosis borrelioses caused by this pathogen are under diagnosed Ixodes tick borreliosis and determine the polymorphism of clinical. Infection with B. miyamotoi ticks lower than B. burgdorferi.s.l., Symptomatic disease this kind are considered very rare. The frequency of relapsing fever caused by B. miyamotoi, may increase with the introduction of routine diagnosis of tick-borne infections PCR test systems for the detection of B. miyamotoi. Due to the fact that on the territory of the Tomsk region attempts to highlight B. miyamotoi was no detection of the pathogen in ticks and blood of patients it is important.
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