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West Nile Virus: An Expanding Threat
25 juin 2026
By Ana Espino | Published on June 25, 2026 | 4 min readWest Nile virus (WNV) is an arbovirus transmitted primarily by mosquitoes of the Culex genus. First identified in Uganda in 1937, it is now present across multiple continents and has become one of the leading causes of mosquito-borne viral encephalitis. Once considered a sporadic infection, WNV has evolved over recent decades into a growing pu
By Ana Espino | Published on June 25, 2026 | 4 min read
West Nile virus (WNV) is an arbovirus transmitted primarily by mosquitoes of the Culex genus. First identified in Uganda in 1937, it is now present across multiple continents and has become one of the leading causes of mosquito-borne viral encephalitis. Once considered a sporadic infection, WNV has evolved over recent decades into a growing public health threat in Europe, North America, and parts of Asia and the Middle East.
West Nile virus (WNV) is an arbovirus transmitted primarily by mosquitoes of the Culex genus. First identified in Uganda in 1937, it is now present across multiple continents and has become one of the leading causes of mosquito-borne viral encephalitis. Once considered a sporadic infection, WNV has evolved over recent decades into a growing public health threat in Europe, North America, and parts of Asia and the Middle East.
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Scientific reference
Najafi S, et al. West Nile Virus: Epidemiology, Surveillance, and Prophylaxis with a Comparative Insight from Italy and Iran. Vaccines (Basel).
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