What are the symptoms of West Nile Virus infection?

Most people who are infected with the West Nile Virus will not have any type of illness. It is estimated that 20% of the people who become infected will develop West Nile fever; mild symptoms, including fever, headache, and body aches, occasionally with a skin rash on the trunk of the body and swollen lymph glands.

Severe Symptoms

The symptoms of severe infection (West Nile encephalitis or meningitis) include:

  • Coma
  • Convulsions
  • Disorientation
  • Headache
  • High fever
  • Muscle weakness
  • Neck stiffness
  • Paralysis
  • Stupor
  • Tremors

It is estimated that 1 in 150 persons infected with the West Nile virus will develop a more severe form of disease.

Show All Answers

1. Do you have a mosquito problem?
2. What is Arboviral Encephalitis?
3. What are the symptoms of West Nile Virus infection?
4. What is the incubation period in humans?
5. How long do symptoms last?
6. I think I have symptoms of West Nile virus. What should I do?
7. What are the symptoms of Arboviral Encephalitis?
8. Are there vaccines for arboviruses?
9. How do we know that arboviruses are in the area and that people might become infected?