scholarly journals Feasibility Study on Hemotransfusion Transmission of West Nile Fever Virus in the Territory of the Saratov Region

2015 ◽  
pp. 70-73 ◽  
Author(s):  
E. V. Kazorina ◽  
T. Yu. Krasovskaya ◽  
E. V. Naidenova ◽  
A. V. Kazantsev ◽  
E. N. Kalinina ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Fever Virus ◽  
West Nile Fever ◽  
West Nile ◽  
Saratov Region

Rhombencephalitis caused by West Nile fever virus

Neurology ◽  
2000 ◽  
Vol 55 (1) ◽  
pp. 153-153 ◽  
Author(s):  
C. A. Nichter ◽  
S. G. Pavlakis ◽  
U. Shaikh ◽  
K. A. Cherian ◽  
J. Dobrosyzcki ◽  
...  
Keyword(s):  
Fever Virus ◽  
West Nile Fever ◽  
West Nile

scholarly journals WEST NILE FEVER IN THE SARATOV REGION IN 2013-2015

2017 ◽  
Vol 62 (5) ◽  
pp. 219-226
Author(s):  
E. V. Kazorina ◽  
T. Yu. Krasovskaya ◽  
A. V. Kazantsev ◽  
E. V. Naydenova ◽  
I. N. Sharova ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Clinical Samples ◽  
West Nile Fever ◽  
West Nile ◽  
Saratov Region ◽  
Stable Domain ◽  
Field Samples ◽  
Live Stock ◽  
Regional Population ◽  
The City

West Nile virus (WNV) circulation in the territory of Saratov region and its role in the infectious pathology were investigated. For this purpose, in studies conducted in 2013-2015, suspensions of bloodsucking arthropods, organs of birds and small mammals were analyzed for the presence of WNV markers (antigens and/or RNA). The seroprevalence level in live-stock animals and population of the region was evaluated; clinical samples from patients with symptoms compatible with West Nile fever (WNF) were analyzed. As a result of the investigations, WNV markers were detected in field samples gathered in natural biotopes and in the city of Saratov. Immunity to WNV was detected in horses. A stable domain of persons with immunity to this agent was revealed among regional population. Patients with WNF have been annually registered in the region since 2012. The obtained results confirm active circulation of WNF in the Saratov region, as well as formation of stable natural and anthropourgic foci.

scholarly journals Conditions for Virus Circulation and Premises for Natural West Nile Fever Foci Formation in the Territory of the Saratov Region

2013 ◽  
pp. 17-22
Author(s):  
A. N. Matrosov ◽  
V. N. Chekashov ◽  
A. M. Porshakov ◽  
S. A. Yakovlev ◽  
M. M. Shilov ◽  
...  
Keyword(s):  
West Nile Fever ◽  
West Nile ◽  
Saratov Region

The role of animals in the circulation and spread of West Nile fever virus

2019 ◽  
Vol 22 (10) ◽  
pp. 30-33
Author(s):  
T.V. Kuznetsova ◽  
◽  
A.M. Dmitrovskiy ◽  
M.V. Kulemin ◽  
◽  
...  
Keyword(s):  
Fever Virus ◽  
West Nile Fever ◽  
West Nile

Serological Assessment of West Nile Fever Virus Activity in the Pastoral System of Ferlo, Senegal

2006 ◽  
Vol 1081 (1) ◽  
pp. 216-225 ◽  
Author(s):  
VÉRONIQUE CHEVALIER ◽  
RENAUD LANCELOT ◽  
AMADOU DIAITÉ ◽  
BERNARD MONDET ◽  
BABA SALL ◽  
...  
Keyword(s):  
Fever Virus ◽  
West Nile Fever ◽  
West Nile ◽  
Pastoral System ◽  
Virus Activity

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 Investigation of Live-Stock Animals Seroprevalence to West Nile Virus in the Territory of the Saratov Region

2020 ◽  
pp. 97-102
Author(s):  
E. V. Kazorina ◽  
T. Yu. Krasovskaya ◽  
A. V. Kazantsev ◽  
S. A. Shcherbakova ◽  
A. A. Chastov ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Test System ◽  
Agricultural Cooperatives ◽  
Left Bank ◽  
West Nile Fever ◽  
Serum Samples ◽  
West Nile ◽  
Saratov Region ◽  
Private Households ◽  
Live Stock

Aim – to determine the intensity of West Nile virus circulation in anthropogenic biotopes in the territory of the Saratov Region between 2012 and 2017. Materials and methods. 1454 blood serum samples from animals of private households and agricultural cooperatives in 14 districts of the Region were investigated: 1111 samples from horses and 343 samples from the cattle. Sera were examined for the presence of total antibodies to WNV using a test system registered in the Russian Federation to detect antibodies to this virus by a competitive enzyme immunoassay «ID Screen West Nile Competition Multi-species» («ID. Vet», France). Results and discussion. The share of resistant to WNV cohort of live-stock animals in the territory of the Saratov Region over the whole period of study was (14.0±0.9) %, particularly in horses – (15.9±1.1) %, and in the cattle – (7.9±1.5) %. The highest values were observed for horses. High level of resistance in live-stock animals was registered in the districts located on the left bank of the river Volga: central ones – Engels (36.4±5.5), Fedorovsky (29.0±4.6), and Sovetsky (20.0±3.7); southern districts – Rovensky (74.3±5.3 %) and Krasnokutsky (15.7±4.4), which confirms the assumption about the initial introduction of the virus from neighboring territories of the Volgograd Region into the territory of the Left Bank where there are characteristic near-water biotopes and active circulation of the agent takes place. The data obtained on the detection of the resistant live-stock animal cohort testify to the spread of West Nile virus in the territory of the surveyed districts of the Saratov Region and, in particular, anthropogenic biotopes which further points to the formation of persistent natural and natural-anthropourgic foci of West Nile fever.

scholarly journals Role of Mosquitoes, Culex pipiens Complex, in West Nile Fever Virus Persistence in Urbanized Biocoenoses of Saratov

2014 ◽  
pp. 66-68 ◽  
Author(s):  
A. M. Porshakov ◽  
S. A. Yakovlev ◽  
K. S. Zakharov ◽  
A. N. Matrosov ◽  
T. V. Knyazeva ◽  
...  
Keyword(s):  
Fever Virus ◽  
West Nile Fever ◽  
West Nile ◽  
Virus Persistence

scholarly journals Seroprevalence of West Nile fever virus in horses in the Belgrade epizootiological area

2020 ◽  
Vol 74 (2) ◽  
pp. 194-201
Author(s):  
Ljubisa Veljovic ◽  
Jelena Maksimovic-Zoric ◽  
Vladimir Radosavljevic ◽  
Slobodan Stanojevic ◽  
Jadranka Zutic ◽  
...  
Keyword(s):  
Human Population ◽  
Viral Disease ◽  
Fever Virus ◽  
West Nile Fever ◽  
Serum Samples ◽  
West Nile ◽  
Horse Population ◽  
Specific Igg ◽  
Vector Borne ◽  
The City

West Nile fever is a vector borne viral disease that can affect humans, horses, birds and sometimes other species of animals. Every year West Nile fever is detected in the human population in Serbia. The disease often occurs in a subclinical form, but most clinically evident cases occur in horses. Therefore, horses are recommended as a sentinel species for monitoring the general incidence of West Nile fever in a specific territory. Our goal was to determine the prevalence of antibodies against West Nile fever virus in horses in the Belgrade epizootiological area. We examined serum samples from 77 horses to determine the seroprevalence of West Nile fever virus in horses throughout the city of Belgrade. Sera were tested by commercial ELISA tests for detection of specific IgG-class antibodies to West Nile fever virus and for the detection of specific IgM-class antibodies to confirm the presence of old and acute (recent) infections in horses. The results confirmed that West Nile fever virus is widespread, detected in 70.1% of the surveyed horse population in Belgrade, and we also detected 5.1% of acute cases had occurred due to horses being infected in 2019. The seroprevalence of West Nile virus in the horse population in the municipality of Belgrade is increasing.

scholarly journals Ecological aspects of zoning the territory of the Saratov region by the risk level of formation of West Nile fever foci

2021 ◽  
pp. 3-15
Author(s):  
K. S. Zakharov ◽  
Sh. V. Magerramov ◽  
A. N. Matrosov
Keyword(s):  
Human Infection ◽  
Activity Period ◽  
Anthropogenic Factors ◽  
Risk Level ◽  
West Nile Fever ◽  
West Nile ◽  
Saratov Region ◽  
Blood Sucking ◽  
Landscape Mapping ◽  
Ecological Aspects

The modern period is characterized by the expansion of the areas of a number of dangerous infectious diseases, previously endemic only for the countries with tropical climate. As a result of Palearctic climate warming and humidification and under the influence of anthropogenic factors, foci of a new transmissible arboviral zoonosis – West Nile fever (WNF) – have been formed in the Saratov region. On the territory of Russia, the circulation of the West Nile virus (WNV) has been recorded since 1963, and cases of human infection have been detected since 1967. In the studied region, the circulation of the virus has been known since the mid-90s of the last century, and epidemic complications – since 2012. 142 cases of the disease were reported in 2012–2020. The ecological prerequisites for a wide circulation of WNV are associated with the increase in the number of birds – carriers, and arthropods – blood-sucking vectors, the longer activity period of mosquitoes and ticks owing to the reduced frosty season of the year. As a result of landscape mapping with the use of modern methods for decoding images of satellite maps and remote sensing of the Earth (ERS), data have been obtained that served as the basis for epidemiological WNF zoning. There are three types of potential WNF foci on the territory of the region, namely: natural, natural-anthropourgic, and anthropourgic ones. The total area of biocenoses has been established, where natural, natural-anthropourgic and anthropourgic WNF foci could be formed: 6619.94 km2, 1484.62 km2, and 70.4 km2, respectively. Cluster analysis of the environmental conditions in 38 administrative districts of the region has distinguished four groups differing in the risk level of infection of the population with West Nile fever. The data obtained are used for planning, substantiating and conducting surveys and preventive measures, and form the basis for predicting the epidemiological situation in the region.

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