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West Nile Virus Transmission Cycle

Illustration copyright 2005. Adapted from the U.S. Centers for Disease Control and Prevention. Available online: http://www.cdc.gov

Mosquitoes become infected with West Nile virus when they bite infected birds and then may transmit the virus to humans and animals when they bite to take blood.

By Healthwise Staff
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer W. David Colby IV, MSc, MD, FRCPC - Infectious Disease
Last Revised August 3, 2010

WebMD Medical Reference from Healthwise

Last Updated: August 03, 2010
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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