Epidemiological features of tick-borne viral encephalitis among the adult population of the Siberian Federal District regions

Abstract

The aim is to study the facts affecting the epidemic process of tick-borne viral encephalitis (TBVE) in the regions of the Siberian Federal District (SFD).

Material and methods. The materials of the study used data from official statistics of the Federal Service for Supervision of Consumer Rights Protection and Human Welfare, health services in the regions of the SFD. Analytical data processing was carried out using the software package Statistica 12.0. Spatial distribution of TBVE incidence across the territory of the SFD with the construction of cartograms was carried out using GIS-technologies of the software package ArcGIS.

Results and discussion. In the regions of the SFD, the age contingent of 18 years and older makes the main contribution to the age structure of the morbidity of the TBVE population and is 85.5%. The average long-term incidence of TBVE in the adult population in the SFO in 2000-2017 was 8.7±0.820/100 000, which is 39.7% higher than for the age group under 17 years (6.2±1.390/100 000, p<0.001). From 2000 to 2017, in the structure of the morbidity of the population of KVE 5 regions of the SFD the adult population annually amounted to about 77.8%. The regions long-term average level of incidence Kwai ranked into 3 groups: high incidence rate is 12.90/100 000 or more; medium from 6.7 to 12.80/100 000, low - less than 6.60/100 000.

Conclusion. As a result of factor analysis of the incidence of TBVE adult population, factors that influence on intensity of epidemic process: virus mite viruses (r=0.44; p<0.001), the area of acaricidal treatment site (r=-0.33; p<0.001), the level of immune layer of the adult population (r=-0.41; p<0.001).

Keywords:tick-borne viral encephalitis, prophylaxis, endemic areas, natural focal infections, risk groups

Funding. The study had no sponsor support.

Conflict of interests. The authors declare no conflict of interests.

For citation: Shirokostup S.V., Lukyanenko N.V., Saldan I.P. Epidemiological features of tick-borne viral encephalitis among the adult population of the Siberian Federal District regions. Infektsionnye bolezni: novosti, mneniya, obuchenie [Infectious Diseases: News, Opinions, Training]. 2020; 9 (2): 89-93. DOI: 10.33029/2305-3496-2020-9-2-89-93 (in Russian)

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CHIEF EDITOR
Aleksandr V. Gorelov
Academician of the Russian Academy of Sciences, MD, Head of Infection Diseases and Epidemiology Department of the Scientific and Educational Institute of Clinical Medicine named after N.A. Semashko ofRussian University of Medicine, Ministry of Health of the Russian Federation, Professor of the Department of Childhood Diseases, Clinical Institute of Children's Health named after N.F. Filatov, Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation, Deputy Director for Research, Central Research Institute of Epidemiology, Rospotrebnadzor (Moscow, Russian Federation)

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