Tick-borne encephalitis is a transmissible natural-focal disease which occurs in some countries across Europe and Asia. The observation of epidemic process dynamics of TBVE in Russia covers an 80-year long period and it’s the world longest. The existence of extensive records, various data from different geographic and administrative areas opens the way to interpretation of certain ecological and social factors and their role in the regional epidemiological situation. The targeted measures against TBVE are feasible only when the role of basic predictors of decreasing incidence is defined. Objective: analysis of TBVE incidence among the population and preventive measures in the Districts and constituent entities of Russia in 2019, forecast for 2020 based on the data collected in 2010–2019. The article shows a continued downward trend in TBVE incidence, noted in recent years. However, cases of infection were registered in 6 Federal Districts and 46 regions just like in the past. The number of patients amounted to 1559 (the incidence rate is 1.02 per 100000 people), of whom 23 have died. The rate of seeking medical care among those who were bitten by ticks increased. Specific preventive measures against TBVE haven’t significantly changed by volume and focus compared to the previous period. The scope of acaricide treatments has declined. The article also presents the data concerning TBVE carriers’ infection rate, and the laboratory study results in districts and regions across the country. It is recognized that the epidemiological situation on TBVE in Russia is still unfavorable. It requires the constant attention of health facilities and Rospotrebnadzor and management decisions aimed at further decrease in the incidence by improved prevention especially in the regions with high TBVE incidence.

Objective of the study was to analyze the incidence of Siberian tick-borne typhus (STBT) in the Russian Federation between 2010 and 2019, Astrakhan spotted fever (ASF) and Mediterranean fever (MF) since official registration, and forecast the development of the epidemic process for endemic rickettsioses for 2020. Materials and methods. The analysis of the incidence of STBT, ASF and MF in the Russian Federation over the period of 2010–2019, 2013–2019 and 2014–2019, respectively, in relation to the results of zoological-entomological monitoring. Results and discussion. The average long-term incidence rate of STBT for 2010–2019 in the Russian Federation on the whole was 1.1 0 /0000 (DI95 1.05÷1.08) without trends towards change. The maximum relative incidence of STBT is typical for the Siberian Federal District (SFD) where the average long-term incidence rate for 2010–2019 amounted to 6.28 per 100 thousand of the population. In the second place is the Far Eastern Federal District (FEFD) – 5.17 0 /0000, in third – the Ural Federal District (UFD) – 0.1 0 /0000. When assessing the 10‑year dynamics of the relative incidence of STBT, we have revealed a significant tendency to increase in the FEFD, a tendency to stabilize in the SFD and a significant downward trend – in the UFD. A reliable increasing trend in STBT incidence was detected in the Altai Republic and in the Khabarovsk Territory. Major decline in STBT incidence was observed in the Trans-Baikal territory, Krasnoyarsk territory, Kurgan Region and the Republic of Khakassia. There is a marked tendency to increase in the incidence of MF in the Republic of Crimea. In the Astrakhan Region and the Republic of Kalmykia, there is an expressed tendency towards the reduction in the ASF morbidity rates.

На протяжении многих лет одной из наи-более опасных и широко распространенных сре-ди природно-очаговых болезней в Российской Федерации (РФ) остается клещевой вирусный энце-фалит (КВЭ) [1, 2,[4][5][6][7][8][9].Цель работы -анализ эпидемиологической об-становки по КВЭ и мер, осуществленных по профи-лактике болезни на территории страны в 2015 г., про-гноз заболеваемости населения на 2016 г.Анализ эпидемиологической ситуации в 2015 г. основан на материалах еженедельного оперативно-го мониторинга, осуществляемого учреждениями Роспотребнадзора в субъектах РФ, представляемых в Федеральную службу по надзору в сфере защиты прав потребителей и благополучия человека и в Референс-центр по мониторингу природно-очаговых инфекци-онных заболеваний бактериальной и вирусной этио-логии ФКУЗ «Иркутский научно-исследовательский противочумный институт» Роспотребнадзора. Статистическая обработка проведена стандартными методами вариационной статистики с применением программы Excel.По данным мониторинга, в эпидемический се-зон 2015 г. в РФ зарегистрировано 2116 больных (1,45 о / оооо ) и 24 летальных исхода (2014 г. -23) от КВЭ. По сравнению с 2014 г. количество заболевших увеличилось на 138 человек (6,5 %), что свидетель-ствует об ухудшении эпидемиологической ситуации на фоне наблюдающегося с начала ХХI века тренда на снижение эпидемических проявлений КВЭ [1, 6, 7, 8]. Необходимо подчеркнуть, что рост заболе-ваемости наблюдался во всех эндемичных по КВЭ Analyzed has been epidemiological situation and measures, performed for prophylaxis of tick-borne viral encephalitis in the territory of Russia in 2015. It is shown that the number of humans bitten by ticks increased in the majority of the constituent entities of the country. But specific and nonspecific preventive operations in 2015 were realized to a lesser extent as compared to 2014. Along with the natural factors, it might be the reason for increase in human tick-borne viral encephalitis morbidity rates. In total, 2116 patients with tick-borne viral encephalitis and 24 lethal cases were registered in the country. On the basis of the data regarding tick-borne viral encephalitis (TBVE) incidence rate among the population across the Federal Districts of Russia over a period of 2009-2015, forecasted have been intensive indicators of the clinical forms' manifestations for 2016. TBVE morbidity rate in RF will amount to (1.90 ± 0.21) о /оооо. With 95 % probability it will be retained within a range of 1.4-2.4 о /оооо.

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The review presents an analysis of epidemic and epizootic situation of Crimean-Congo hemorrhagic fever in the Russian Federation in 2010–2019, summarizes the results of epizootiological monitoring of the CCHF natural focus territory in the south of European part of Russia. An unfavorable epidemiological situation regarding CCHF is maintained in the Russian Federation. In 2010–2019, 999 CCHF cases were registered in nine regions of Southern and North-Caucasian Federal Districts. In 2019, an increase in the CCHF incidence level in the entities of the SFD and NCFD was observed as compared to 2017–2018. The expansion of the territory with registered epidemic manifestations of CCHF continues. In 2010–2019, the number of imago and pre-imaginal phases of Hyalomma marginatum – the main vector of the CCHF virus in Russia, remained consistently high. High numbers of H. marginatum ticks and their CCHFV infection rates can contribute to the development of an unfavorable epidemiological situation in the south of the Russian Federation with a possible increase in the CCHF incidence in 2020.