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Smallpox Virus

Smallpox is an infection cause by Variola virus, a member of the chordopoxvirus family. Naturally occurring smallpox has been eradicated from the globe, with the last case occurring in Somalia in 1977. Repositories of virus are known to exist in only two laboratories worldwide - at the U.S.-based Centers for Disease Control and Prevention and at Russia's Vector . Monkeypox, cowpox and Vaccinia are closely related viruses that might lend themselves to genetic manipulation and the...

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