Abstract
Background. The epidemiological situation in the Astrakhan region indicates the activation of the natural foci of the Crimean-Congo hemorrhagic fever (CCHF), due to a sharp increase in carriers and guardians of the CCHF pathogen, Hyalomma marginatum, on both farm animals and in open biotopes. Natural conditions in combination with human activities (animal husbandry, crop production) and the lack of anti-tick measures create a favorable environment for the population of vectors and, therefore, for the circulation of the CCHF virus. Aim - identification of features of ecological and epidemiological manifestations of the CCHF in the Astrakhan region in 2000-2016. Results. The state of the natural foci of CCHF was monitored, which is endemic and the most severely occurring natural focal disease of arbovirus etiology in the Astrakhan region, preserving the tendency to expand the range. For the analyzed period from 2000 to 2016.151 cases of CCHF were registered in the Astrakhan region, the average long-term incidence rate of the population was 0.88 ± 0.2 per 100 ths of the population. The disease is registered in all districts of the region and the city of Astrakhan, but the largest number is noted in the floodplain-delta regions, where there are favorable conditions for grazing cattle. There is a clear connection between the infection and certain landscapes, where the necessary set of conditions for the circulation of the pathogen is provided.
Highlights
The epidemiological situation in the Astrakhan region indicates the activation of the natural foci of the Crimean–Congo hemorrhagic fever (CCHF), due to a sharp increase in carriers and guardians of the CCHF pathogen, Hyalomma marginatum, on both farm animals and in open biotopes
For the analyzed period from 2000 to 2016. 151 cases of CCHF were registered in the Astrakhan region, the average long-term incidence rate of the population was 0.88 ± 0.2 per 100 ths of the population
The disease is registered in all districts of the region and the city of Astrakhan, but the largest number is noted in the floodplain-delta regions, where there are favorable conditions for grazing cattle
Summary
Эпидемиологическая ситуация, сложившаяся на территории Астраханской области, свидетельствует об активизации природного очага Крымской геморрагической лихорадки (КГЛ, Крым-Конго геморрагическая лихорадка – ККГЛ), обусловленная резким увеличением переносчиков и хранителей возбудителя КГЛ – клещей Hyalomma marginatum. Цель исследования – выявление особенностей эколого-эпидемиологических проявлений КГЛ на территории Астраханской области с 2000 по 2016 г. За анализируемый период (2000–2016 гг.) на территории Астраханской области был зарегистрирован 151 случай заболевания КГЛ, среднемноголетний показатель заболеваемости населения составил 0,88 ± 0,2 на 100 тыс. Цель настоящего исследования – выявление особенностей эколого-эпидемиологических проявлений Крымской геморрагической лихорадки (КГЛ) на территории Астраханской области в 2000–2016 гг. Для проведения ретроспективного эпидемиологического анализа по КГЛ были изучены абсолютные показатели заболеваемости населения и интенсивные На территории Астраханской области был зарегистрирован 151 случай заболевания КГЛ, среднемноголетний показатель заболеваемости составил 0,88 ± 0,2 на 100 тыс. Age structure of patients with CCHF in the Astrakhan region in 2000–2016
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