What are the signs and symptoms of a West Nile virus infection?
Most people who get a WNV infection do not develop any signs or symptoms. Those who develop WN fever may have mild symptoms and may feel like they have the flu. Symptoms may include fever, headache, eye pain, muscle pain, tiredness, runny nose, cough, and sore throat. You may have a loss of appetite, nausea (upset stomach), vomiting (throwing up), abdominal (stomach) pain, or diarrhea. Sometimes a red skin rash may develop. The severe form of WNV infection may include fever with one or more of the following: • Bad headache, stiff neck, or neck pain. • Behavior problems, such as acting differently than normal or being unaware of what is happening around you. • Confusion (having trouble thinking clearly). • Seizures (convulsions) or movement problems, such as uncontrolled shaking, jerking, stiffness, or slow movement. • Severe weakness. • Sleepiness. How is a West Nile virus infection diagnosed? Your caregiver will take a detailed health history from you. This includes information about
