Peculiarities of West Nile Fever Manifestations in the Volgograd Region

Ioannidi, E.A.; Muromtseva, A.A.; Bozhko, V.G.; Kuvshinova, T.D.; Викторов, Д. В.; Smelyanskiy, V.P.; Welfare, Human

doi:10.19163/1994-9480-2019-2(70)-67-70

Cited by 6 publications

(2 citation statements)

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“…Since 1999, WNF cases have been reported in Volgograd almost every year, except in 2017. Outbreaks occurred in 1999 (380 cases), 2007 (63 cases), 2010 (521 cases), 2011 (60 cases), 2012 (210 cases), and 2013 (49 cases) [ 97 , 98 ]. Most likely, the number of human infections was much higher than the number of reported cases.…”

Section: Discussionmentioning

confidence: 99%

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Spatial patterns of West Nile virus distribution in the Volgograd region of Russia, a territory with long-existing foci

et al. 2022

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Southern Russia remains affected by West Nile virus (WNV). In the current study, we identified the spatial determinants of WNV distribution in an area with endemic virus transmission, with special reference to the urban settings, by mapping probable points of human infection acquisition and points of virus detection in mosquitoes, ticks, birds, and mammals during 1999–2016. The suitability of thermal conditions for extrinsic virus replication was assessed based on the approach of degree-day summation and their changes were estimated by linear trend analysis. A generalized linear model was used to analyze the year-to-year variation of human cases versus thermal conditions. Environmental suitability was determined by ecological niche modelling using MaxEnt software. Human population density was used as an offset to correct for possible bias. Spatial analysis of virus detection in the environment showed significant contributions from surface temperature, altitude, and distance from water bodies. When indicators of location and mobility of the human population were included, the relative impact of factors changed, with roads becoming most important. When the points of probable human case infection were added, the percentage of leading factors changed only slightly. The urban environment significantly increased the epidemic potential of the territory and created quite favorable conditions for virus circulation. The private building sector with low-storey houses and garden plots located in the suburbs provided a connection between urban and rural transmission cycles.

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Section: Discussionmentioning

confidence: 99%

“…The distribution of WNF cases throughout the year is seasonal, with a maximum in August to September in Volgograd [ 98 ]. That is, peak clinical disease occurs earlier than the end of the SEI ( Table 5 ).…”

Section: Discussionmentioning

confidence: 99%

Spatial patterns of West Nile virus distribution in the Volgograd region of Russia, a territory with long-existing foci

et al. 2022

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

Putintseva¹,

Алексейчик²,

Чеснокова³

et al. 2020

Problemy Osobo Opasnykh Infektsii

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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.

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About the characteristics of «internal» and «external» epidemiological risks in the territory Rostov region

Кононенко

Водяницкая

2020

Med. vestn. Ûga Ross.

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Objective: to identify some «internal» and «external» risks that are signifi cant for the Rostov region and calculate their quantitative characteristics.Materials and methods: materials for «internal» risks in the administrative territories of the Rostov region served materials FBUZ «Center of hygiene and epidemiology in the Rostov region» on the incidence of Crimean hemorrhagic fever (KGL) and West Nile (LSN) during the period 2004 – 2017 as a whole across the Rostov region and the slit regions, the data of the regional law «About administrative-territorial structure of Rostov region», the Results of the national census. To determine the «internal» risks, we used the guidelines developed by us «Methodology for assessing the territory of the subject of the Russian Federation on the integral indicator of population morbidity with arbovirus infections», approved by Th e decision of the Academic Council of the Rostov-on-Don anti-plague Institute of Rospotrebnadzor and approved by the Director.Results: based on the results of the ranking of the territory of the Rostov region on the incidence of KGL and LDL, the degree of epidemiological risk was assessed and «risk territories» were identifi ed for these nosologies, which can serve as a basis for risk management — making scientifi cally based management decisions. To calculate the magnitude of the «external» risk and further spread of the disease, you can use various methods to assess the probability of adverse development of the epidemiological situation under the infl uence of various risk factors. Epidemiological risk can also be characterized by multiplying the individual risk by the population exposed to risk factors.Conclusions: identifi cation and calculation of risk levels depending on risk factors will help determine the scope of management decisions, and the specifi cation of risk factors will allow you to develop specifi c measures to reduce risk.

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Peculiarities of West Nile Fever Manifestations in the Volgograd Region

Cited by 6 publications

References 0 publications

Spatial patterns of West Nile virus distribution in the Volgograd region of Russia, a territory with long-existing foci

Spatial patterns of West Nile virus distribution in the Volgograd region of Russia, a territory with long-existing foci

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

About the characteristics of «internal» and «external» epidemiological risks in the territory Rostov region

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