Coronavirus: US bars foreign nationals who have recently travelled to China

• CDC says situation in China 'serious' but risk to US public low
• Temporary ban for non-Americans travelling from China
• What is the coronavirus and how worried should we be?

The Trump administration has declared a public health emergency over the coronavirus outbreak and announced it will temporarily bar entry to the US for people traveling from China unless they are Americans or immediately related to US citizens.

"This is a serious health situation in China, but I want to emphasize the risk to the American public currently is low," said the Centers for Disease Control and Prevention (CDC) director, Robert R Redfield, on Friday. "It is our goal to keep it that way."