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Did You Know?

 

Human Survival and The Virus

 

"The single greatest threat to man’s continued existence on earth is the virus."

- Joshua Ledeberg, Nobel Scientist

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Variola virus - Copyright Dennis Kunkel Microscopy

 

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Variola virus - Copyright Dennis Kunkel Microscopy

 

 

Variola virus, the cause of smallpox (DNA virus, Family Poxviridae). Smallpox virus, also known by the Latin name Variola virus, is highly infectious. Smallpox is caused by either of two virus variants named Variola major and Variola minor. V. major, the deadlier form, has a mortality rate of 25-35%. The virus characteristically causes a severe skin rash, high fever and often death. The attack on skin cells causes the characteristic pimples and pustules associated with the disease. Some symptoms of smallpox are high fever, fatigue, severe headache, malaise, diarrhea, vomiting, and excessive bleeding. Smallpox is transmitted primarily through social contact or direct contact with infected body fluids / contaminated objects. Edward Jenner produced the smallpox vaccine using cowpox fluid. The practice of vaccination against smallpox spread quickly in Europe and then to North America. The last case of wild smallpox occurred on October 26, 1977. Smallpox was considered eradicated in the 1970's by WHO based on efforts of the global vaccination program. After the 2001 anthrax attacks in the United States, concerns about smallpox have resurfaced as a possible agent for bioterrorism.

Magnification: x19,815

Copyright Dennis Kunkel Microscopy, Inc.

This image is the property of Dennis Kunkel and Dennis Kunkel Microscopy, Inc. The image is copyrighted and any reproduction without direct approval is expressly prohibited.

For permission to license and use this image, please contact Dennis Kunkel:

Dennis Kunkel Microscopy, Inc.
P.O. Box 2008
Kailua, HI 96734
Phone: 808-263-0583
Email: kunkel@denniskunkel.com
www.denniskunkel.com

Variola virus - Copyright Dennis Kunkel Microscopy:  Created on September 9th, 2007.  Last Modified on November 4th, 2009
 
 

 

 

 

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