К вопросу о северной границе распространения<i>Ixodes persulcatus</i>(Acari: Ixodidae) в Карелии

Bugmyrin, Sergey; Nazarova, Lidia; Беспятова, Любовь Алексеевна; Иешко, Е. П.

doi:10.7868/s0002332913020033

Cited by 2 publications

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“…Комплексное воздействие данных факторов на численность клещей и уровень заболеваемости ИПК подтверждается многочисленными отечественными и зарубежными исследованиями. Доказано влияние гидротермичес ких условий на численность таежного клеща в Красноярском крае, на территории южного Прибайкалья, в Республике Карелия [5,7,12]. Выявлена связь между повышенными значениями температуры воздуха, длительностью безморозного периода, увеличением числа иксодовых клещей и ростом количества больных клещевым боррелиозом в Иркутской области и Забайкальском крае [9,16,20].…”

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Effect of the natural and climatic factors on epidemiological situation related to natural focal infections

Прислегина¹,

Platonov²,

Малецкая³

2021

Russian Journal of Infection and Immunity

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This article is dedicated to the analysis and generalization of the Russian and foreign research results on natural and climatic factors effect on the intensity of epidemic process manifestations and the natural focal infections pathogens vectors vital activity which are the most widespread in the Russian Federation. Over the past seven years tick-borne infections have been accounting for more than 50 per cent in the natural focal diseases general nosological structure. Among the diseases of this group Lyme borreliosis leads in prevalence and frequency of cases identification. Tick-borne viral encephalitis is still a serious danger for national health. Crimean-Congo hemorrhagic fever epidemiological situation remains unfavorable in the south of the European part of Russia. In addition to the annual patients identification, the demonstrable trend of shifting and expansion of the pathogen’s area in a northerly direction was established. It creates a risk for the spread of the Crimean-Congo hemorrhagic fever virus outside the southern regions of the country. High incidence of the dangerous vector-borne infection — West Nile fever — with the involvement of new subjects in the epidemic process and the emergence of local cases of infection in previously non-endemic territories is registered. Expansion of hemorrhagic fever with renal syndrome natural foci borders, which is the most widespread natural focal zoonosis of viral etiology in the Russian Federation and is the second by the frequency of patients identification after tick-borne infections, is noted. Research data for the dependence of the carriers pathogens number and the dynamics of the natural focal infections incidence on the values of climatic factors, confirmed using various methods of mathematical statistics (time-series analysis, autoregression integrated moving average, logistic regression, correlation analysis, one-way analysis of variance and other) were systematized. It was found that the temperature and humidity of the air and soil, the amount of precipitation, the height of the snow cover are the common abiotic factors for all of investigated infections. The values of these factors can be used for the subsequent epidemiological forecast. The further study of relationship between the incidence rate of the population, the number of arthropod vectors and small mammals with indicators of soil moisture and temperature at different depths, hydrothermal coefficient, normalized relative vegetation index, accumulated values of temperature and precipitation, as well as similar studies on other actual natural focal infections in the Russian Federation will be very promising.

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Section: результатыunclassified

Effect of the natural and climatic factors on epidemiological situation related to natural focal infections

Прислегина¹,

Platonov²,

Малецкая³

2021

Russian Journal of Infection and Immunity

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Ticks and tick-borne infections in Karelia: analysis of ticks brought by citizens to be tested at the Center for hygiene and epidemiology in the Republic of Karelia (Petrozavodsk)

Bugmyrin,

Poutonen,

Pakhomova

et al. 2023

Parazitologiâ

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In 2019 and 2021, species composition of the ticks provided by citizens was studied at the Center for Hygiene and Epidemiology in the Republic of Karelia (based in Petrozavodsk). As a result, about 2 500 tick specimens were identified as belonging to the following species of the family Ixodidae: Ixodes persulcatus Schulze, 1930, I. ricinus (Linnaeus, 1758), Dermacentor marginatu s (Sulzer, 1776), D. reticulatus Fabricius, 1794, Hyalomma marginatum Koch, 1844, and Rhipicephalus sanguineus (Latreille, 1806). For 2% of the ticks, including all species not typically dwelling in Karelia, the attacks occurred outside of Karelia. For districts of Karelia, two species were identified: I. persulca tus (approx. 95% of all ticks delivered) and I. ricinus . Prevalence of pathogens in ticks as analyzed with the use of a commercial kit «AmpliSense® TBEV, B . burgdorferi sl, A . phagocytphillum , E . chaffeensis / E . muris - FL» based on real-time PCR. Prevalence of the tick-borne encephalitis virus in I. persulcatus was 1.5%. In I. ricinus ticks the virus was absent. The prevalence of the Borrelia burgdorferi s. l. and Ehrlichia spp. complex constituted 32.5 and 3.3% in I. persulcatus versus 16.3 and 0.8% in I. ricinus , respectively. A single occurrence of Anaplasma phagocytophillum was found in I. persulcatus (prevalence - 0.04%). The main determinant of the epidemiological situation in Karelia is the wide distribution and high abundance of I. persulcatus .

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К вопросу о северной границе распространенияIxodes persulcatus(Acari: Ixodidae) в Карелии

Cited by 2 publications

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Effect of the natural and climatic factors on epidemiological situation related to natural focal infections

Effect of the natural and climatic factors on epidemiological situation related to natural focal infections

Ticks and tick-borne infections in Karelia: analysis of ticks brought by citizens to be tested at the Center for hygiene and epidemiology in the Republic of Karelia (Petrozavodsk)

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