The CDC is also concerned about the xenophobia as the outbreak continues to spread to countries around the world.
The Australian government on Saturday increased border restrictions for travelers from the Chinese mainland amid fears over the outbreak of the deadly coronavirus, following similar travel restrictions imposed by the USA the previous day. But the moves run counter to the recommendation of the World Health Organization, which said on Thursday that it could demand scientific justification from countries that go beyond its guidance not to restrict travel. A foreign ministry spokesman said this was because of the "practical difficulties" Chinese citizens had faced overseas.
The death toll from the new virus, which is officially called 2019-nCov, now stands at 259. The latest figures for mainland China show 9,692 confirmed cases.
As of Saturday, he said, the world has seen almost 12,000 confirmed cases, all but 133 of them in China. The UK, US, Russia and Germany have all confirmed cases in recent days.
"I'm not anxious so much about the virus as I am about being forced to go to a Chinese hospital simply for having a fever", he said.
How are countries outside China responding? Both this virus and SARS likely originated in bats then jumped to people in China.
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 recently visited China. Those returning from other parts of China will be allowed to monitor their own condition for a similar period.
Latest statistics on the global deadly coronavirus threat
A seventh confirmed coronavirus case in the U.S. was reported in Northern California on Friday, when a man tested positive for the virus after having traveled to China.
The country evacuated 333 citizens from Wuhan in a second charter flight that landed in Seoul on Saturday. Thailand is also set to evacuate its nationals from the city in the coming days.
The Hong Kong government has found 49 people from Hubei after searching about 500 hotels, and will send them to quarantine centres or help them leave the city, according to Sophia Chan, secretary for food and health. Chinese officials also extended the shutdown because of the coronavirus outbreak.
The northern city of Tianjin, home to some 15 million, suspended all schools and businesses until further notice.
Also Friday, Delta Air Lines and American Airlines suspended all flights between the United States and China.
Another locked-down city in Hubei, Huanggang, on Saturday banned nearly all residents from leaving their homes in the most stringent controls imposed yet.
"We understand this action may seem drastic". But officials in Wuhan are being slammed for their slow response in the early stages.
"The quarantine offers us the greatest level of protection for preventing further spread in America", said Martin Cetron, MD, director for quarantine and migration at the CDC.
As of Thursday, none of the group at the base had exhibited signs of the disease, local health officials said.