West Nile disease has no symptoms in most people.

However, in some cases it can cause flu-like symptoms such as fever, headache, body aches, joint pains, vomiting, diarrhea, or rash. In severe cases, it can lead to neurological symptoms such as neck stiffness, disorientation, tremors, seizures, paralysis, and coma. It is important to seek medical attention if you believe you may have been infected with the West Nile virus.