Illustration copyright 2005. Adapted from the
U.S. Centers for Disease Control and Prevention. Available online:
Mosquitoes become infected with West
Nile virus when they bite infected birds. And then they may transmit the virus to
humans and animals when they bite to take blood.
August 10, 2012
E. Gregory Thompson, MD - Internal Medicine & W. David Colby IV, MSc, MD, FRCPC - Infectious Disease
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