scholarly journals West Nile Fever Epidemic Situation in the Russian Federation Territory in 2011 and Prognosis of its Development

2012 ◽  
pp. 17-21 ◽  
Author(s):  
V. A. Antonov ◽  
V. Yu. Smolensky ◽  
E. V. Putintseva ◽  
A. V. Lipnitsky ◽  
V. P. Smelyansky ◽  
...  
Keyword(s):  
Russian Federation ◽  
Forest Steppe ◽  
West Nile Fever ◽  
West Nile ◽  
Central Regions ◽  
European Part Of Russia ◽  
Natural Foci ◽  
The Russian Federation ◽  
Near Future ◽  
Regions Of Russia

Presented is characteristic of West Nile Fever (WNF) epidemiologic situation in the Russian Federation in 2011. Expansion of the territories involved in the epidemic process and formation of the new WNF foci are observed. Data on WNF morbidity in June-October 2011 in ten regions of Russia are presented. Described are clinical and epidemiologic peculiarities of WNF morbidity in 2011. WNF agent markers are detected in the territory of 38 regions of Russia, suggesting its circulation on the vast areas of the country. Prognosis on WNF epidemic situation in the Russian Federation is considered to be dependent on many factors, climate warming being the most global one. Natural foci emergence and WNF cases registration are expected in the near future in the central regions of European part of Russia and forest-steppe area of Southern Siberia. WNF diagnostics improvement is thought to confer for better registration of the cases and detection of further enlargement of endemic territories.

scholarly journals Peculiarities of the Epidemic Situation on West Nile Fever in the Territory of the Russian Federation in 2018 and Forecast of its Development in 2019

2019 ◽  
pp. 17-25 ◽  
Author(s):  
I. O. Alekseychik ◽  
E. V. Putintseva ◽  
V. P. Smelyansky ◽  
N. V. Boroday ◽  
A. K. Alieva ◽  
...  
Keyword(s):  
Russian Federation ◽  
Incidence Rates ◽  
The European Union ◽  
West Nile Fever ◽  
West Nile ◽  
European Part Of Russia ◽  
Virus Genotypes ◽  
Federal Districts ◽  
The Usa ◽  
The Russian Federation

The epidemic rise in the incidence of West Nile fever (WNF) in the season of 2018 was observed in the countries of the European Union (EU) and bordering states and exceeded the values of all previously recorded epidemic rises of 2010–2012. An increase in the incidence rate was registered in the USA and Canada, however, it did not exceed the indicators of epidemic rises of 2007–2012. In the territory of the Russian Federation, the WNF epidemiological process became more intense mainly in the territory of the Southern and North Caucasian Federal Districts. In general, in Russia, the incidence rates were 2 times lower than the average annual rates, but significantly exceeded those of 2017. The epidemic process had a number of peculiarities in the seasonality, the structure of morbidity and the clinical manifestation of WNF. Genotyping of the isolated WNV RNA fragments from clinical and biological material showed that I, II and IV West Nile virus genotypes were circulating in the European part of Russia. Forecast of epidemic situation development in 2019 reveals further increase in the incidence and does not exclude the possibility of a significant localincrease of WNF incidence in certain regions of Russia. 

scholarly journals THEORETICAL ASPECTS OF CREATION OF SPECIFIC PREPARATIONS FOR ETIOTROPIC THERAPY AND PROPHYLAXIS OF WEST NILE FEVER AND CRIMEAN HAEMORRHAGIC FEVER

2016 ◽  
pp. 85-93
Author(s):  
V. I. Efremenko ◽  
A. A. Efremenko ◽  
D. V. Efremenko
Keyword(s):  
Theoretical Basis ◽  
Hemorrhagic Fever ◽  
Raw Material ◽  
West Nile Fever ◽  
West Nile ◽  
Healthy Donors ◽  
Central Regions ◽  
Natural Foci ◽  
Federal Districts ◽  
Regions Of Russia

Problematic issues on creation and practical introduction of specific immune biologic preparations for therapy and prophylaxis of natural-foci arbovirus infections - West Nile fever (WNF) and Crimean hemorrhagic fever (CHF), that are not available until now, are examined. Persistent natural foci of WNF and CHF with epidemic manifestations have formed in Southern and North Caucasian Federal Districts of Russia. Markers of Wfest Nile virus are being detected in central regions of Russia and Siberia, and the presence of fraction of population immune to this infection is also detected. Analysis of literature sources that has been carried out forms a theoretical basis for creation of novel specific preparations for etiotropic therapy and prophylaxis ofWNF and CHF. Use of blood from healthy donors with sufficiently high titers of class G immunoglobulins residing in certain subjects of Russian Federation in natural foci territories with the most intensive epidemic process is possible as raw material.

scholarly journals Results of the West Nile Fever Agent Monitoring in the Russian Federation in 2019 and the Forecast of Epidemic Situation Development in 2020

2020 ◽  
pp. 51-60 ◽  
Author(s):  
E. V. Putintseva ◽  
I. O. Alekseychik ◽  
S. N. Chesnokova ◽  
S. K. Udovichenko ◽  
N. V. Boroday ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Russian Federation ◽  
Climatic Conditions ◽  
European Part ◽  
West Nile Fever ◽  
The West ◽  
West Nile ◽  
Volgograd Region ◽  
European Part Of Russia ◽  
The Russian Federation

The trend towards an increase in the West Nile fever incidence among the population in the Russian Federation, recorded in the season of 2018, continued and led to a significant increase in the incidence in 2019 (the indicator was 2 times higher than the long-term average). The features of manifestations of the epidemiological process of WNF in 2019 were identified: early registration of cases of the disease, activation of natural and natural-anthropourgic foci in the Southern Federal District (90 % of the total incidence in the Russian Federation), an increase in the share of neuro-invasive forms, dominance of patients aged 50 and older in the structure of the incidence, late epidemic season ending. It was established that in the season of 2019, the lineage 2 of WNV circulated in the European part of Russia. In the Volgograd Region, simultaneous presence of the West Nile virus and Sindbis virus in mosquitoes Culex pipiens and Culex modestus was identified. It was shown that the most significant factors for predicting the epidemiological situation on West Nile fever in the Volgograd Region are the average seasonal summer air temperature and monthly average indicators of relative humidity in the spring and summer periods, and the average monthly air temperatures in the spring and summer in the Rostov Region. In the Astrakhan Region, a significant correlation dependence of the influence of the considered factors on the incidence of the population has not been established. The forecast of the development of epidemic situation in 2020 does not exclude a possible increase in the incidence in the territories of the European part of Russia, endemic for West Nile fever, and the occurrence of local outbreaks in individual constituent entities, if the complex of climatic conditions and social factors favorable for West Nile virus coincide.

scholarly journals Prognosis of Epidemiologic Situation of West Nile Fever in the Territory of the Russian Federation for 2010

2010 ◽  
pp. 14-17 ◽  
Author(s):  
E. V. Putintseva ◽  
V. P. Smelyanskiy ◽  
V. A. Antonov ◽  
A. V. Lipnitskiy ◽  
V. V. Alekseev
Keyword(s):  
West Nile Virus ◽  
Russian Federation ◽  
West Siberia ◽  
West Nile Fever ◽  
West Nile ◽  
The North ◽  
The Russian Federation ◽  
The Republic ◽  
Epidemic Development ◽  
Near Future

Results of retrospective epidemiologic analysis of population morbidity in different regions of the Russian Federation and epidemic situation of West Nile fever in the territory of Russia are presented. Analysis was based on the reports of Rospotrebnadzor Administrations in the subjects of the Russian Federation and general publications of research institutes which carried out investigations of West Nile fever. Epidemic manifestations of this infection are identified in the Astrakhan, Volgograd, Rostov and Ulyanovsk regions. Circulation of West Nile virus is registered in 22 territories of Russia. The average seroprevalence of West Nile virus antibodies in population of different regions varies (1% in the West Siberia, 3% in the Rostov region and 10% in the Astrakhan, Volgograd regions and the Republic of Adygeya). The prognosis of epidemic development in near future demonstrated that spread of West Nile fever to the North territories of Russia would continue. The outbreaks of infection are possible in the territories where epidemic manifestations have not been noticed previously but virus circulation is identified in nature. The necessity of monitoring of West Nile virus in all territories of Russia is proved.

scholarly journals The Role of Birds as Potential Reservoirs of West Nile Virus in the Territory of the Russian Federation

2012 ◽  
pp. 18-21 ◽  
Author(s):  
A. A. Baturin ◽  
V. A. Antonov ◽  
V. P. Smelyansky ◽  
K. V. Zhukov ◽  
V. F. Chernobay ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Russian Federation ◽  
West Nile Fever ◽  
West Nile ◽  
Ecological Relationships ◽  
Geographical Regions ◽  
The Russian Federation ◽  
Regions Of Russia

Submitted are the materials on epizootiology of West Nile Fever in birds, taking into account their migration. Described are the characteristics of WNF in wild and synanthropic birds. Ecological relationships between birds, mosquitoes, ticks and West Nile virus are analyzed. Main autumn bird migratory directions are characterized and the data on WNF monitoring in birds in different geographical regions of Russia are presented.

scholarly journals Scientific Conference of the Problem Commission “Arboviruses and other zoonoses viruses: Topical issues of the study of West Nile fever, dengue fever and other tropical imported arboviral infections in the Russian Federation”

2014 ◽  
Vol 19 (3) ◽  
pp. 58-61
Author(s):  
A. M Butenko
Keyword(s):  
Dengue Fever ◽  
Russian Federation ◽  
Federal State ◽  
Scientific Conference ◽  
West Nile Fever ◽  
West Nile ◽  
The Russian Federation

In the article there is presented a brief overview concerning proceedings of RAMS Problem Commission "Arboviruses and other zoonoses viruses" on the theme: "Actual issues of studying of West Nile fever, dengue fever and other tropical imported arboviral infections in the Russian Federation", which was held in Federal State Budgetary Institution "D. I. Ivanovsky Institute of Virology (Russian Federation, Moscow) on 16th of March, 2014.

scholarly journals Peculiarities of Epidemiological Situation on the West Nile Fever in the Russian Federation in 2020 and Forecast for Its Development in 2021

2021 ◽  
pp. 63-72
Author(s):  
E. V. Putintseva ◽  
S. K. Udovichenko ◽  
N. V. Boroday ◽  
D. N. Nikitin ◽  
A. А. Baturin ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Russian Federation ◽  
Healthy Population ◽  
West Nile Fever ◽  
Molecular Genetic Study ◽  
The West ◽  
West Nile ◽  
Federal Districts ◽  
Lineage 2 ◽  
The Russian Federation

The paper presents an analysis of West Nile Fever incidence in the Russian Federation in 2020, summarizes the results and identifies problematic issues of the pathogen monitoring. Manifestations of West Nile Fever in 2020 were characterized by a low incidence rate (10 times lower than the average long-term value) with sporadic cases registration in the endemic areas of the Southern (9 cases) and Central (1 case) Federal Districts. A discrepancy between the morbidity structure (distribution by age, sex, social status) and the trends that have developed in Russia in recent years is shown. The analysis of officially recorded cases doesn’t characterize the epidemic process of West Nile fever in Russia during 2020-season as a whole. The generalized results of monitoring of the West Nile virus circulation in environmental objects in 2020 indicate a decrease in the effectiveness of its implementation and a low detectability of pathogen markers. A decrease in the volume of diagnostic studies for the active detection of patients with West Nile fever in the epidemic season (5.7 times lower compared to 2019), as well as serological screening of healthy population samples (1.6 times) has been established. The results of a molecular-genetic study of the pathogen showed that lineage 2 of the pathogen was circulating in the European part of Russia. The circulation of the lineage 4 of the virus in the enzootic cycle in the Republic of Kalmykia was found out. The genome sequences of 11 West Nile virus isolates allocated in 2019 and 2020 were obtained. Phylogenetic analysis revealed that all isolates allocated in the Volgograd Region and isolates from the Rostov and Astrakhan regions belong to the Volgograd clade of the lineage 2 of the West Nile virus. Based on the assessment of abiotic and biotic factors, possible local increases in the incidence of West Nile fever in 2021 in the regions of the Southern and North Caucasian Federal Districts and in the south of Western Siberia have been substantiated.

scholarly journals Trends in Epidemic Process Development of Tick-Borne Encephalitis in the Russian Federation, Laboratory Diagnosis, Prophylaxis and Forecast for 2021

2021 ◽  
pp. 6-16
Author(s):  
E. I. Andaev ◽  
A. Ya. Nikitin ◽  
E. V. Yatsmenko ◽  
E. V. Verigina ◽  
M. I. Tolmacheva ◽  
...  
Keyword(s):  
Russian Federation ◽  
Temperate Climate ◽  
Public Health Issue ◽  
Morbidity Rate ◽  
Management Decision ◽  
Forest Steppe ◽  
Human Welfare ◽  
Tick Borne Encephalitis ◽  
Natural Foci ◽  
The Russian Federation

Tick-borne encephalitis is a natural-focal infection damaging central nervous system, caused by the similarly-named virus transmitted by several species of ixodic ticks. Natural foci of tick-borne encephalitis (TBE) are widely spread in the forest and forest-steppe landscape zones of the temperate climate belt in the vast territory of Eurasia from the Atlantic to the Pacific Ocean. New TBE-endemic territories have been recently identified in Japan, the Netherlands, and in the UK – in 2019. The increasing risk of infection due to the development of tourism and visits to natural foci of TBE became a public health issue of international concern. The aim of the study is to identify modern features of TBE incidence dynamics in the Russian Federation, the state of laboratory diagnostics and prevention and to predict the incidence for 2021. The paper shows that there is a persistent downward trend in TBE-cases in Russia, which is observed through the past few years. The characteristic feature of the epidemic season-2020 was a significant reduction in the incidence of TBE: 989 cases were registered in 33 constituent entities of the Russian Federation (morbidity rate – 0.67 per 100 000 of the population). The sharp decrease of TBE cases in 2020 as compared to 2019 against the background of a decrease in vaccination can be explained, along with natural factors, by the introduction of restrictive measures during the COVID-19 epidemic. The paper also reflects the dynamics of morbidity, seeking the medical services because of tick bites, the infection rate of the carrier, the scope of vaccination, seroprophylaxis, acaricide treatments. The coverage of express-diagnostic tests of ticks for markers of associated pathogens and its availability for the population are presented. It is recognized that the epidemiological situation on TBE in the Russian Federation remains unfavorable. It demands constant attention on the part of healthcare organizations and Federal Service for Surveillance in the Sphere of Consumers Rights Protection and Human Welfare, as well as management decision making aimed at further decrement in TBE incidence through the improvement of prevention measures, specifically in the entities that are characterized by high TBE incidence. The situation requires monitoring of natural foci of infection, enhancement of prophylaxis and treatment of TBE. The paper provides the forecast of TBE incidence for 2021 and values of the 95 % confidence range of the indicator fluctuation, taking into account the presence or absence of trends in its changes in the territory of federal districts and constituent entities of the Russian Federation in 2011–2020.

scholarly journals Epidemiological Situation and Prognostication of the West Nile Fever Morbidity in the Territory of the Russian Federation

2008 ◽  
pp. 10-12 ◽  
Author(s):  
D. K. L’vov ◽  
S. T. Savchenko ◽  
V. V. Alekseev ◽  
A. V. Lipnitsky ◽  
T. P. Pashanina
Keyword(s):  
Russian Federation ◽  
Fever Virus ◽  
Virus Population ◽  
West Nile Fever ◽  
The West ◽  
West Nile ◽  
Epidemic Period ◽  
The Russian Federation ◽  
Epidemiological Situation

The questions of spreading of West Nile fever in the territory of theRussian Federationand abroad are considered. The information on the main carriers and vectors of this infection and their interaction with virus population is presented. The tendency of spreading of the West Nile fever virus in theRussian Federationand the possibilities of its maintenance during the inter-epidemic period are shown. Recommendations are given on the organization of serologic monitoring ofWest Nilefever in natural and anthropurgic biocenoses.

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