Symptoms

Most people infected with West Nile virus either don't develop signs or symptoms or have only minor ones, such as fever and mild headache. About 20 percent of people develop a mild infection called West Nile fever. Common signs and symptoms include:

• Fever
• Headache
• Body aches
• Vomiting
• Diarrhea
• Fatigue
• Skin rash

In less than 1 percent of infected people, the virus causes a serious neurological infection. Symptoms may include:

• High fever
• Severe headache
• Stiff neck
• Disorientation or confusion
• Stupor or coma
• Tremors or muscle jerking
• Seizures
• Partial paralysis or muscle weakness

When To See A Doctor

Mild symptoms of West Nile fever usually resolve on their own. For signs or symptoms of serious infection, such as severe headaches, a stiff neck, disorientation or confusion, seek medical attention right away. A serious infection generally requires hospitalization.

For additional information on West Nile Virus please visit the Centers for Disease Control and Prevention web site or the New Jersey Department Of Environmental Protection Office of Mosquito Control Coordination and West Nile Virus Fact Sheet.