scholarly journals West Nile Fever in the Tula region, Russian Federation

2014 ◽  
Vol 19 (2) ◽  
pp. 20-25
Author(s):  
A. M. Butenko ◽  
A. A. Kozlova ◽  
V. F. Larichev ◽  
T. K. Dzagurova ◽  
R. A Pantykhova ◽  
...  
Keyword(s):  
Russian Federation ◽  
Neutralization Test ◽  
Unknown Etiology ◽  
Serological Testing ◽  
West Nile Fever ◽  
Febrile Disease ◽  
West Nile ◽  
Duration Of Hospitalization ◽  
Duration Of Disease ◽  
First Time

As a result of serological testing (MAC-ELISA, ELISA-IgG and neutralization test) 143 sera from 132 patients with acute febrile disease of unknown etiology hospitalized in summer 2012 in the hospitals of Tula, the first time in Tula and the Tula region were diagnosed 4 cases of West Nile fever. The age ofpatients was 42, 60, 62 and 64. They all got sick in August 2012. The temperature reached 39-40°C. Duration of disease from 13 to 20 days, the duration of hospitalization from 8 to17 days. Neurological symptoms were observed in two patients in the form of meningeal syndrome and encephalopathy with asthenic symptoms (in one case) and faint meningeal syndrome (in another).

scholarly journals Is West Nile virus a potential cause of central nervous system infection in Brazil?

2010 ◽  
Vol 68 (5) ◽  
pp. 761-763 ◽  
Author(s):  
Cristiane N Soares ◽  
Mauro J. Cabral Castro ◽  
José M Peralta ◽  
Marcos R.G. de Freitas ◽  
Marzia Puccioni-Sohler
Keyword(s):  
West Nile Virus ◽  
Rio De Janeiro ◽  
Viral Encephalitis ◽  
Neutralization Test ◽  
Dengue Infection ◽  
Central Nervous System Infection ◽  
Viral Meningitis ◽  
Unknown Etiology ◽  
West Nile ◽  
The City

Meningitis and encephalitis are complications of West Nile virus (WNV) infection. Although WNV is endemic in North America, the virus has recently been reported in Colombia and Argentina. Investigation of WNV in Brazil is important since this virus has never been studied previously in this country. OBJECTIVE: To investigate the presence of WNV infection in viral encephalitis/meningitis cases of unknown etiology in the city of Rio de Janeiro, Brazil. METHOD: Thirty-seven adults with viral meningitis/encephalitis had their serum and CSF tested for WNV antibodies using the ELISA method. RESULTS: Only one case was WNV-positive, but this case was also positive for dengue. The plaque reduction neutralization test distinguished infections, and was negative for WNV. CONCLUSION: WNV can be confused with dengue infection. Their symptoms and neurological picture are similar. We did not find WNV in any patients with encephalitis and meningitis in the city of Rio de Janeiro. Up to now, it has not been detected in Brazil

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 THE INFORMATIVE VALUE OF IMMUNOLOGICAL AND GENETIC TESTS IN THE DIAGNOSIS WEST NILE FEVER

2020 ◽  
Vol 76 (4) ◽  
pp. 42-45
Author(s):  
Т.V. Zamarina ◽  
◽  
N.P. Khrapova ◽  
I.A. Barkova ◽  
E.V. Pimenova ◽  
...  
Keyword(s):  
Viral Infection ◽  
Viral Rna ◽  
Unknown Etiology ◽  
West Nile Fever ◽  
West Nile ◽  
Respiratory Viral Infection ◽  
Blood Samples ◽  
Monitoring Centre ◽  
Laboratory Confirmation ◽  
Acute Respiratory Viral Infection

We used ELISA and PCR for laboratory verification of West Nile fever (MUC 4.2.3009-12). We analyzed serum and whole blood samples which had been sent to West Nile fever reference monitoring centre in 2018–2019. A total of 270 blood samples obtained from patients with presumed viral encephalitis of unknown etiology, acute respiratory viral infection, acute respiratory viral infection, meningitis, acute gastroenteritis were analyzed. Antibodies against WNV were detected in 193 (71,4 %) blood samples, while 146 samples were found to be capable of developing an immune response with viral RNA not being detected in them. Both WNV antibodies and viral RNA were detected in 47 (17,4 %) samples tested. WNV RNA was detected in only 14 (5,1 %) cases. Thus, laboratory confirmation of WNF was obtained in 76,6 % of cases (207 out of 270).

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 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.

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

2021 ◽  
Vol 98 (1) ◽  
pp. 84-90
Author(s):  
N. F. Vasilenko ◽  
D. A. Prislegina ◽  
O. V. Maletskaya ◽  
T. V. Taran ◽  
A. E. Platonov ◽  
...  
Keyword(s):  
Dengue Fever ◽  
Russian Federation ◽  
Viral Encephalitis ◽  
Clinical Manifestations ◽  
European Part ◽  
Epidemiological Surveillance ◽  
The South ◽  
West Nile Fever ◽  
West Nile ◽  
The Russian Federation

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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