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Oct 3, 2017 · West Nile virus can cause a fatal neurological disease in humans. However, approximately 80% of people who are infected will not show any symptoms. West Nile virus is mainly transmitted to people through the bites of infected mosquitoes. The virus can cause severe disease and death in horses. Vaccines are available for use in horses but not yet ...
Oct 16, 2023 · West Nile encephalitis and meningitis. Symptoms of more serious West Nile infections include: Intense, very painful headache. High fever (above 103 degrees Fahrenheit or 39.5 degrees Celsius). Stiff neck. You might not be able to move your chin toward your chest. Confusion. Muscle weakness. Muscle movements you can’t control (tremors or ...
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What is West Nile Virus (WNV)?
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West Nile virus (WNV) is the leading cause of mosquito-borne disease in the continental United States. It is most commonly spread to people by the bite of an infected mosquito. Cases of WNV occur during mosquito season, which starts in the summer and continues through fall. There are no vaccines to prevent or medications to treat WNV in people.
The West Nile virus can infect humans, birds, mosquitoes, horses, and some other mammals. In very rare cases, the virus can spread in transfused blood, a transplanted organ, or through the placenta to a fetus. West Nile virus infections occur in mid- to late summer and early fall in mild zones. It can also occur year-round in southern climates.
West Nile virus. 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. The virus is primarily transmitted by mosquitoes, mostly species of Culex.
Febrile illness (fever) in some people. About 1 in 5 people who are infected develop a fever with other symptoms such as headache, body aches, joint pains, vomiting, diarrhea, or rash. Most people with febrile illness due to West Nile virus recover completely, but fatigue and weakness can last for weeks or months. Serious symptoms in a few people.
Jul 3, 2023 · Symptoms. Most people infected with the West Nile virus do not experience any symptoms though some may develop a fever, headache, body aches, joint pains, vomiting and rash. While most people fully recover, some may experience ongoing weakness and fatigue for months. Severe symptoms from West Nile virus are uncommon though people over 60 face a ...
