
A year ago today, the WHO first learned of a cluster of pneumonia cases in Wuhan, China of "unknown" origin. Here's the impact of that fateful day, by the numbers.
(Image credit: Kevin Frayer/Getty Images)

A year ago today, the WHO first learned of a cluster of pneumonia cases in Wuhan, China of "unknown" origin. Here's the impact of that fateful day, by the numbers.
(Image credit: Kevin Frayer/Getty Images)
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