CDC confirms 12th coronavirus case in the U.S.

An adult in Wisconsin with a history of travel to Beijing, China, has contracted the coronavirus, the state health department and Centers for Disease Control and Prevention confirmed on Wednesday.

What's happening: The individual, who is currently isolated at home, "was exposed to known cases" of 2019-nCoV while in China. Immediate health risk to the general public in Wisconsin is low, the state health department said.

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