Colorized scanning electron micrograph of filamentous Ebola virus particles (red) attached and budding from a chronically infected VERO E6 cell (blue) (25,000x magnification).
Colorized scanning electron micrograph of filamentous Ebola virus particles (red) attached and budding from a chronically infected VERO E6 cell (blue) (25,000x magnification). NAID

The World Health Organization declared Guinea free of the deadly Ebola virus in late December, a long-awaited public health triumph over an illness that killed more than 2,500 people in the past two years. (NPR)

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