How does it spread?

Infected Mosquitoes

Generally, WNV is spread by the bite of an infected mosquito. Mosquitoes are WNV carriers that become infected when they feed on infected birds. Infected mosquitoes can then spread WNV to humans and other animals when they bite.

Transfusions, Transplants & Mother-to-Child

In a very small number of cases, WNV also has spread through blood transfusions, organ transplants, breastfeeding, and even during pregnancy from mother to baby.

Not Through Touching

WNV is not spread through casual contact such as touching or kissing a person with the virus.

Show All Answers

1. What are the symptoms of WNV?
2. How does it spread?
3. How soon do infected people get sick?
4. How is WNV infection treated?
5. What should I do if I think I have WNV?
6. What is the risk of catching WNV?