The U.S. has put in place new measures to ban all foreigners who have been in China, and to quarantine U.S. citizens or permanent residents who are returning from China.
American schools are advising students to avoid travel to China, and some are working to evacuate students already there. The U.S. issued a "Do Not Travel" advisory for China on Thursday.
The U.S. CDC announced the drastic step of quarantining 195 Americans who were evacuated back to the United States from Wuhan, the epicenter city of the coronavirus outbreak in China.
A wet market is a complex of stalls selling fish, meat and wild animals. One such market in Wuhan has been linked to the current outbreak of coronavirus.
One by one, China's neighbors are closing their borders and restricting travel in an effort to stop the spread of the coronavirus. The U.S. and Japan recommend their citizens don't travel to China.