Cold, Flu, and Sinus Library
Advertisement
WEEKLY NEWSLETTER
Health's Top Stories
Get a weekly look at the most popular stories on Health.com.
Virus
content provided by
Healthwise
A virus is a microscopic organism that causes infection and disease. Viral illnesses can range from mild to severe, including examples such as the common cold, West Nile virus, polio, and smallpox.
Last Updated:
July 8, 2010- Medical Review:
- E. Gregory Thompson, MD - Internal Medicine
Christine Hahn, MD - Epidemiology
© 1995-2011 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information.
