State media report at least 39 people have been injured in a knife attack on a kindergarten in southern China.

Secretary of State Mike Pompeo said there are "enormous" signs that the novel coronavirus outbreak originated a biomedical laboratory in Wuhan, China -- the city where cases first exploded.

The U.S. intelligence community has not ruled out the possibility that the novel coronavirus was inadvertently introduced to a human carrier or released into the broader environment by a research laboratory, rather than a wet market, in Wuhan, China.

Top Chinese officials secretly determined they were likely facing a pandemic from a new coronavirus in mid-January, ordering preparations even as they downplayed it in public.

China's health ministry says the city of Wuhan — the original epicenter of the coronavirus pandemic — and the surrounding Hubei province reported no new cases in the last 24 hours, providing hope in the global fight against the virus.

The University of North Carolina at Chapel Hill has implemented domestic and international travel requirements and restrictions to combat the spread of a new coronavirus strain.

With two deaths confirmed in the U.S. and scientists warning the new coronavirus could already have spread much more widely than believed in one state, the disease that emerged in central China was taking a mounting toll on American nerves by Monday morning.

Concerns about the coronavirus outbreak's threat to the world economy grew Saturday, even after President Donald Trump denounced criticism of his response to the threat as a “hoax" cooked up by his political enemies.  

As fears over the coronavirus outbreak spread, thousands of Americans are clamoring to buy face masks in an effort to protect themselves, sending prices soaring and leading manufacturers like 3M to ramp up production.