What is it about?
The work studied the diagnosis of West Nile fever in animals in the Middle Volga region. Brain samples from 200 individuals (100 birds and 100 mammals) were examined. The results of examination of biological samples from five bird species and eleven mammal species were analyzed in 2024. It was determined that among mammals, the largest number in the analysis was the bank vole (39%), yellow-necked mouse (21%), striped field mouse (9%).
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Why is it important?
The basis for the study was that earlier in 2023 and 2024 for Mordovia, the West Nile virus was diagnosed for the first time by blood tests in patients with symptoms of WNF in the Republic of Mordovia. It was suggested that this may be related to global warming. It was found that the average annual temperature in Mordovia for the period from 2006 to 2023 fluctuated within the range of 4.2–6.3 ºC (an average of 5.5 ºC). Warm winters and long warm autumns have been observed in recent years. A list of animal species (29 bird species and 18 mammal species) has been compiled for which priority tests are required, since WNF markers have been detected in them in different regions of Russia.
Perspectives
The birds are migratory animals over significant distances, which, in light of theidentified trend in recent years in climate warming in Mordovia and in Russia as a whole,contributes to considering them the main hosts of this new disease. The results of the WestNile Virus marker surveys of birds and mammals should be discussed more widely eachyear to anticipate the implications for public health and disease surveillance. This is notenough. Recommendations should be made for similar studies to be conducted inneighboring regions (Ulyanovsk, Penza, Ryazan, Nizhny Novgorod oblasts, and theChuvash Republic) in order to comprehensively assess the routes of disease penetration intoMordovia and develop a plan to prevent the spread of the disease.
Alexey Andreychev
Read the Original
This page is a summary of: Climate change’s impact on recording of West Nile fever of animals in the Middle Volga region, BIO Web of Conferences, January 2025, EDP Sciences,
DOI: 10.1051/bioconf/202518102023.
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