PHILADELPHIA (AP) — Federal health authorities on Wednesday confirmed the discovery of some frozen vials labeled “Smallpox" in a freezer at a facility in Pennsylvania that conducts vaccine research.

Vials labeled 'smallpox' that were discovered in a freezer in a Philadelphia laboratory don't contain any traces of the deadly virus, federal health officials reveals. The Centers for Disease Control ...

CHICAGO/ATLANTA (Reuters) - Stray vials of the deadly smallpox virus from the 1950s have been discovered at a federal lab near Washington, US health officials said on Tuesday, marking the second major ...

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