West Nile virus transmission risk in the Czech Republic
Authors:
J. Vlčková; V. Rupeš; D. Horáková; H. Kollárová; O. Holý
Authors‘ workplace:
Ústav preventivního lékařství, Lékařská fakulta UP v Olomouci
Published in:
Epidemiol. Mikrobiol. Imunol. 64, 2015, č. 2, s. 80-86
Category:
Review Article
Overview
West Nile Virus (WNV) belongs to the family Flaviviridae. It is transmitted to humans by mosquitoes, capable of sucking blood on birds and mammals, most often by mosquitoes of the genus Culex. In humans, the virus was first identified in 1937 in the West Nile region, Uganda, Africa. Later, the virus spread and caused more or less severe epidemics of West Nile fever in North Africa, Europe, Asia, and North and South America. During the last two decades, WNV has been on the rise and is currently ranked as one of the most prevalent arboviruses in the world. In humans, WNV infection mostly occurs as asymptomatic, but may have a more severe or even fatal course in older and weakened patients. Humans may become infected not only by mosquitoes that acquire the virus from infected birds, but also through a blood transfusion, organ transplant, breast milk and transplacental transmission, or contact with infected animals, their blood, and tissues. The first autochthonous human case of West Nile fever in the Czech Republic was reported from South Moravia in 1997. In 2013, another case of West Nile fever emerged in this country, in the Ostrava area. The issue of WNV has recently been studied from many different perspectives, as evidenced by many original and review papers. This article briefly reviews the essential knowledge about this virus and its spread.
Keywords:
West Nile fever – West Nile virus (WNV) – Culex mosquitoes – WNV spread – clinical symptoms – prevention
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Hygiene and epidemiology Medical virology Clinical microbiologyArticle was published in
Epidemiology, Microbiology, Immunology
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