U.S. declares coronavirus public health emergency after imposing quarantines

The Trump administration, while insisting the risk to Americans from coronavirus is low, nevertheless declared a public health emergency on Friday and announced the extraordinary step of barring entry to the United States of foreign nationals who have traveled to China.In addition, starting on Sunday U.S. citizens who have traveled within the past two weeks to China's Hubei Province - epicenter of the coronavirus epidemic - will be subject to a mandatory quarantine of 14 days: the incubation per