How do people get West Nile virus?
Most people get infected with West Nile virus by the bite of an infected mosquito. Mosquitoes become infected when they feed on infected birds. Infected mosquitoes can then spread the virus to humans and other animals.

In a very small number of cases, West Nile virus has been spread through blood transfusions, organ transplants, and from mother to baby during pregnancy, delivery, or breastfeeding.

Show All Answers

1. What is West Nile virus?
2. How do people get West Nile virus?
3. How soon do people get sick after getting bitten by an infected mosquito?
4. What are the symptoms of West Nile virus disease?
5. How can people reduce the chance of getting infected?
6. What repellent should I use?
7. How do birds get infected with West Nile virus?
8. Do birds infected with West Nile virus die or become ill?
9. What should I do if I find a dead bird?
10. Where can I report a problem with mosquitoes?