West Nile virus

West Nile virus (WNV) is a mosquito-borne virus that can cause serious illness in people and animals.


some people may develop mild symptoms, such as fever, headache, body aches, and a rash. 


WNV is transmitted to people through the bite of an infected mosquito. Mosquitoes become infected with WNV by biting infected birds.


There is no vaccine or specific treatment for WNV infection.


Treatment is supportive and includes rest, fluids, and over-the-counter medications to reduce fever and pain

Risk factors

Anyone can be infected with WNV, but people over the age of 60 and people with weakened immune systems are at increased risk of serious illness.


Most people who are infected with WNV recover fully. However, some people may experience long-term neurological problems.


WNV is a serious mosquito-borne virus that can cause serious illness. If you think you may have been infected with WNV, see a doctor right away.