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West Nile virus (WNV) is a single-stranded RNA virus that causes West Nile fever. It is a member of the family Flaviviridae , from the genus Flavivirus , which also contains the Zika virus , dengue virus , and yellow fever virus.
West Nile fever is an infection by the West Nile virus, which is typically spread by mosquitoes. [1] In about 80% of infections people have few or no symptoms. [2] About 20% of people develop a fever, headache, vomiting, or a rash. [1] In less than 1% of people, encephalitis or meningitis occurs, with associated neck stiffness, confusion, or ...
West Nile Fever (WNF) is a mosquito-borne viral infection caused by the West Nile virus (WNV), a member of the Flaviviridae family. The virus primarily incubates in a bird-mosquito transmission cycle, with humans and other mammals serving as incidental hosts .
West Nile virus (WNV) is a mosquito-borne virus first identified in the United States in 1999. It is most commonly found in Africa, Europe, the Middle East and North America.
The majority of people with West Nile virus do not present with symptoms, but about one in five will experience fever along with headaches, body aches, joint pain, diarrhea, vomiting, or a rash.
The United States has seen a flurry of West Nile virus ... Mosquitoes are the world’s deadliest animal because they ... About 1 in 5 people with West Nile virus may develop a fever with other ...
During the 2012 West Nile virus outbreak in Texas, 1,868 cases were reported. Male patients, persons >65 years of age, and minorities were at highest risk for neuroinvasive disease. At total of 1,868 cases including 844 (45%) WNND (West Nile neuroinvasive disease) cases and 89 deaths (case-fatality rate 5%).
—Horse owners should vaccinate their animals to protect them from West Nile virus and Western equine encephalitis. —Contact a health care provider if you have symptoms of West Nile fever ...