The Current State of Natural Foci of Tick-Borne Encephalitis near Irkutsk City

Among main factors that influence intensity of tick-borne encephalitis foci one can distinguish the numbers of core vector (here, taiga tick Ixodes persulcatus) and the percentage of infected ticks. This paper shows the results of five-year monitoring of the tick-borne encephalitis focus, which is s...

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Bibliographic Details
Published in:Problems of Particularly Dangerous Infections
Main Authors: O. V. Mel'nikova, E. A. Vershinin, V. M. Korzun, E. I. Andaev, E. A. Sidorova
Format: Article in Journal/Newspaper
Language:Russian
Published: Federal Government Health Institution, Russian Research Anti-Plague Institute “Microbe” 2011
Subjects:
ixodes persulcatus
numbers
abundance of infected ticks
morbidity
Infectious and parasitic diseases
RC109-216
taiga
Online Access:https://doi.org/10.21055/0370-1069-2011-4(110)-27-30
https://doaj.org/article/9caf512a9482428da6bcea17530de9e2
Description
Summary:Among main factors that influence intensity of tick-borne encephalitis foci one can distinguish the numbers of core vector (here, taiga tick Ixodes persulcatus) and the percentage of infected ticks. This paper shows the results of five-year monitoring of the tick-borne encephalitis focus, which is situated near Irkutsk city. Detected are the variations in numbers and infestation of the core vector of tick-borne encephalitis, both spatial and temporal. Cause-effect connection between these factors and human TBE morbidity is not found. However, morbidity rates of the Irkutsk population, observed on the annual basis, bear evidence of high activity and intensity of the foci. In this regard, a number of preventive measures is put forward, but further observations concerning all the parameters that influence foci activity are required.

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