Erschienen in:
04.08.2022 | Tropical, Travel and Emerging Infections (LH Chen and F Norman, Section Editors)
West Nile virus: another emerging arboviral risk for travelers?
verfasst von:
Chinmay Jani, Loukas Kakoullis, Nour Abdallah, Christian Mouchati, Stephanie Page, Robert Colgrove, Lin H. Chen
Erschienen in:
Current Infectious Disease Reports
|
Ausgabe 10/2022
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Abstract
Purpose of Review
West Nile virus (WNV) is an arbovirus transmitted by mosquitos of the genus Culex. Manifestations of WNV infection range from asymptomatic to devastating neuroinvasive disease leading to flaccid paralysis and death. This review examines WNV epidemiology and ecology, with an emphasis on travel-associated infection.
Recent Findings
WNV is widespread, including North America and Europe, where its range has expanded in the past decade. Rising temperatures in temperate regions are predicted to lead to an increased abundance of Culex mosquitoes and an increase in their ability to transmit WNV. Although the epidemiologic patterns of WNV appear variable, its geographic distribution most certainly will continue to increase. Travelers are at risk for WNV infection and its complications. Literature review identified 39 cases of documented travel-related WNV disease, the majority of which resulted in adverse outcomes, such as neuroinvasive disease, prolonged recovery period, or death.
Summary
The prediction of WNV risk is challenging due to the complex interactions of vector, pathogen, host, and environment. Travelers planning to visit endemic areas should be advised regarding WNV risk and mosquito bite prevention. Evaluation of ill travelers with compatible symptoms should consider the diagnosis of WNV for those visiting in endemic areas as well as for those returning from destinations with known WNV circulation.