Epidemiological Situation on Crimean-Congo Hemorrhagic Fever in the Russian Federation in 2019 and Forecast for 2020

Волынкина, А. С.; Kotenev, E. S.; Малецкая, О. В.; Скударева, О. Н.; Шапошникова, Л. И.; Колосов, А. В.; Tokhov, Yu. M.; Василенко, Н П; Манин, Е. А.; Прислегина, Д. А.; Yatsmenko, E. V.; Куличенко, А. Н.

doi:10.21055/0370-1069-2020-1-14-20

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…Процент проб, содержащих специфические иммуноглобулины к вирусу КГЛ, равнялся 2,2%. Данный показатель примерно равен уровню иммунной прослойки населения Ставропольского края (2,4%) [19]. Выявление антигенов арбовирусов в кровососущих комарах Волгоградской области говорит о циркуляции этих патогенов на территории региона.…”

Section: Introductionunclassified

Analysis of the Results of Monitoring Arbovirus Infections in the Volgograd Region in 2019

Негоденко¹,

Молчанова²,

Прилепская³

et al. 2021

Epidemiology and Vaccinal Prevention

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Relevance. Natural and climatic conditions, a variety of species composition of arthropods and vertebrates determine the possibility of circulation of arboviruses in the Volgograd region. The existence of natural foci of some arbovirus infections and the possibility of the formation of others suggests the need for annual monitoring of the causative agents of arbovirus diseases. Аim. Evaluation of the results of monitoring of arbovirus infections in the Volgograd region in 2019.Materials and methods: 806 blood serum samples from donors, 44 blood serum samples from febrile sick people, 300 blood serum samples from horses and 94 pools of blood-sucking mosquitoes were examined by immunofernal analysis. Result of the study of serum samples from donors in the Volgograd region, in 140 (17.4%) of 806 were found to have antibodies to the pathogen of West Nile fever (in 35 (4.3%) – IgM, in 105 (13.0%) – IgG), in 7 (2.2%) of 319 – to the Crimean hemorrhagic fever virus (in 4 (1.3%) – IgM, in 3 (0.9%) –IgG), and in 7 (2.9%) of 240 – IgG to the viruses of the California serogroup. Specific antibodies against viruses of Sindbis, Batai and Uukuniemi in the samples was not detected. The largest number of positive samples with the presence of IgG and IgM to the West Nile virus was found among residents of Volgograd (61 out of 240, 25.4%) and Volzhsky (25 out of 100, 25, 0%). Among 44 blood serums of febrile patients, 1 sample (2.3%) was found to contain an antigen of the Sindbis virus, and 2 samples (4.5%) – antigens California serogroup viruses. Specific immunoglobulins against West Nile virus were detected in 84 (28%) of 300 blood serums of farm animals (horses). In the study of 94 samples of field material (blood-sucking mosquitoes), West Nile virus antigen was detected in 14 (14.9%), Sindbis virus – in one sample (1.0%), Batai virus – in four samples (4.2%). Conclusions: the obtained results, along with the circulation of West Nile virus and Crimean hemorrhagic fever virus virus in the Volgograd region, indicate the presence of Sindbis, Batai and California serogroup viruses and necessitate further study of their role in the infectious pathology of the population.

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Section: Introductionunclassified

Analysis of the Results of Monitoring Arbovirus Infections in the Volgograd Region in 2019

Негоденко¹,

Молчанова²,

Прилепская³

et al. 2021

Epidemiology and Vaccinal Prevention

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Current Status of the Natural Foci of Tick-Borne Diseases in the Stavropol Region

Василенко¹,

Прислегина²,

Manin³

et al. 2021

PH&LE

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Background: Tick-borne diseases are a serious threat to the epidemiological safety of the population of the Stavropol Region, making up more than 70 per cent of all natural focal infectious diseases registered in this territory annually. A wide range of hosts contributes to high tick abundance, diversity of tick-borne pathogens, and maintenance of the natural foci. Objective: To assess the activity of natural foci of tick-borne infections in the Stavropol Region in 2016–2020. Materials and methods: We used notifications submitted by the Center for Hygiene and Epidemiology in the Stavropol Region to the Scientific and Methodological Center for Monitoring the Pathogens of Infectious and Parasitic Diseases of Pathogenicity Groups II–IV for the subjects of the North Caucasian and Southern Federal Districts and the results of an epizootological survey of the Stavropol territory by specialists of the Stavropol Plague Control Research Institute. Markers of the causative agents of tick-borne diseases were detected by ELISA and PCR methods. Data processing was carried out using Microsoft Excel 2010. Results: Active natural foci of Crimean-Congo hemorrhagic fever, Q fever, a group of tick-borne spotted fevers, Lyme disease, human granulocytic anaplasmosis, and human monocytic ehrlichiosis were established in the region in 2016–2020. Human cases of the Crimean-Congo hemorrhagic fever, Lyme borreliosis and Q fever were also registered annually. The abundance of infected ticks in resort towns of the Caucasian Mineral Waters is of particular concern. Conclusion: We established up-to-date epizootic and epidemic manifestations of tick-borne infections in the Stavropol Region in the modern period, which are an important link in epidemiological surveillance and the basis for improving preventive measures

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Arbovirus infections incidence in the south of the European part of the Russian Federation

Василенко¹,

Прислегина²,

Малецкая³

et al. 2021

Journal of microbiology, epidemiology and immunobiology

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Purpose: analysis of the arbovirus infections incidence in the south of the European part of the Russian Federation in 2015–2019.Materials and methods. Data from statistical documentation (epidemiological examination of the infectious disease cases, reports on the arbovirus infections incidence) reported by Departments of Rospotrebnadzor to Scientific and Methodological Center for monitoring pathogens of infectious and parasitic diseases of 1–3 risk groups for subjects of the North Caucasian and Southern Federal Districts were analyzed. The obtained data were processed using Microsoft Excel 2010 program.Results. In the south of the European part of the Russian Federation Crimean-Congo hemorrhagic fever (CCHF), West Nile fever (WNF), tick-borne viral encephalitis and dengue fever cases are registered annually.An expansion of the territory with registered epidemic manifestations of CCHF and WNF was noted, reflecting an increase in the area of circulation of their pathogens. An expansion of CCHF and WNF epidemic season with the involvement into the epidemic process of people from all age groups including young children was observed. Significant increase in number of imported cases of dengue fever was documented. Markers of tick-borne viral encephalitis, Batai, Inko, Sindbis, and Tyaginya fevers were detected in residents of a number of territories. A high levels of population humoral immunity to West Nile, Batai, Inko, Sindbis Tyaginya, Ukuniemi, Bhanja, Dkhori viruses were identified in the Astrakhan region.Conclusion. The data obtained indicate the need for epidemiological surveillance both for arbovirus infections with a pronounced epidemiological and clinical manifestations, and for infections, the proportion of which in the structure of infectious pathology in southern Russia has not been sufficiently studied, but carrying a potential risk of spreading.

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Epidemiological Situation on Crimean-Congo Hemorrhagic Fever in the Russian Federation in 2019 and Forecast for 2020

Cited by 3 publications

References 25 publications

Analysis of the Results of Monitoring Arbovirus Infections in the Volgograd Region in 2019

Analysis of the Results of Monitoring Arbovirus Infections in the Volgograd Region in 2019

Current Status of the Natural Foci of Tick-Borne Diseases in the Stavropol Region

Arbovirus infections incidence in the south of the European part of the Russian Federation

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