CDC: Smallpox Virus Samples Found In Lab Are Live

Earlier this month, scientists found decades-old vials of the smallpox virus in the storage room of a lab near D.C.

At the time, it was unclear if any of them were viable samples. On Friday, the Centers for Disease Control and Prevention announced that at least two of the six found are live and infectious.

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Fuente: http://www.huffingtonpost.com/2014/07/11/smallpox-live_n_5579616.html