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Smallpox is caused by the double-stranded DNA orthopoxviruses Variola major and Variola minor. The virus no longer occurs naturally. Due to an aggressive immunization program by the World Health Organization and its inability to survive for more than a week outside of its only host, humans, Variola was declared eradicated in 1980. The two known stock of the virus are at the U.S. Center for Disease Control and Prevention in Atlanta and the State Research Center of Virology and Biotechnology in Koltsovo, Russia. Rumors are that other countries may have retained their stock of smallpox and the Russian stock may have been compromised.

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Date Of Record Release 2009-04-08 17:03:03
Description Smallpox is caused by the double-stranded DNA orthopoxviruses Variola major and Variola minor. The virus no longer occurs naturally. Due to an aggressive immunization program by the World Health Organization and its inability to survive for more than a week outside of its only host, humans, Variola was declared eradicated in 1980. The two known stock of the virus are at the U.S. Center for Disease Control and Prevention in Atlanta and the State Research Center of Virology and Biotechnology in Koltsovo, Russia. Rumors are that other countries may have retained their stock of smallpox and the Russian stock may have been compromised.
Classification
Resource Type
Format
Subject
Source Federation of American Scientists
Keyword Smallpox, Variola major, Variola minor, Virus, Viruses, Disease, Bioterrorism, Biological weapons, Biological Warfare
Date Of Record Creation 2009-04-08 16:46:24
Education Level
Date Last Modified 2009-10-12 16:04:46
Language English
Date Record Checked: 2009-04-08 00:00:00 (W3C-DTF)

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