Definition
West Nile Virus (WNV) is a mosquito-borne Flavivirus that can cause West Nile fever. 🦟 Most people infected show no symptoms or only mild ones like fever and headache. However, in some cases, it can lead to severe neurological illness, including encephalitis or meningitis. Think of it as a 'sneaky' virus; it's widespread but often unnoticed. The virus cycles between mosquitoes and birds, occasionally infecting humans and other mammals. It's a good example of how interconnected ecosystems can affect human health.