Here's what we know about the China coronavirus outbreak

An outbreak of a mysterious lung virus has sickened hundreds of people in China and has killed 17 people so far. It has now reached the U.S. with one confirmed case. Here's what we know about it.

While the definitive origin of the new strain of coronavirus is still under investigation, some of the first cases have been linked to a seafood market in the central Chinese city of Wuhan.

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