Mandatory US quarantine kicks in as 7th case in the country is confirmed

The coverage on this live blog has ended — but for up-to-the-minute coverage on the coronavirus, visit the live blog from CNBC's Asia-Pacific team.

All times below are in Eastern time.

Walmart on Friday said it is temporarily limiting "non-business critical travel" to China amid the coronavirus outbreak.

"(Walmart is) temporarily limiting all non-business critical travel to, from, and within mainland China, and conducting all planned meetings virtually," Walmart International Chief Executive Judith McKenna said.

The total number of deaths from a coronavirus epidemic in China had reached 259 by the end of Friday, an increase of 46, state broadcaster CCTV reported Friday, citing numbers from the country's National Health Commission. There were 2,102 new confirmed infections in China during the day, bringing the cumulative total to 11,791. Hubei Province's local health commission reported 45 new deaths from the outbreak on Friday, bringing the total to 249. The province confirmed 1,347 new cases of infection on Friday, with the total reaching 7,153 by the end of the day.

The Santa Clara Public Health Department said an adult man tested positive for the new coronavirus, marking at least the seventh case in the U.S. as the outbreak spreads across the globe. The patient contracted the virus in Wuhan and has been isolated at home since, county officials said at a press conference Friday.

The Trump administration is issuing a mandatory quarantine for U.S. citizens who've visited Hubei province in the last 14 days and denying entry to foreign nationals who "pose a risk of transmitting" the virus in the U.S., administration officials said in declaring the coronavirus a public health emergency. "Any US citizen returning to the United States who has been in the Hubei province in the previous 14 days will be subject to up to 14 days of mandatory quarantine to ensure they're provided proper medical care and health screening," Health and Human Services Secretary Alex Azar said.

The White House is expected to address the widening outbreak of the coronavirus. The briefing will involve members of President Donald Trump's coronavirus task force, which includes national security advisor Robert O'Brien, Health Secretary Alex Azar and other leading officials. The briefing comes hours after the Centers for Disease Control and Prevention quarantined 195 Americans evacuated from Wuhan, China, which has become the epicenter for the spread of the virus. Watch the live briefing here.

U.S. and international health officials are speeding work to create a vaccine for the deadly coronavirus spreading throughout Asia, which has already outpaced the 2003 SARS epidemic and killed at least 213 people in China. Hopes to get a vaccine to market are high, but doctors want to set expectations for how quickly that can happen low. Developing, testing and reviewing any potential vaccine is a long, complex and expensive endeavor that could take months or even years, global health experts say.

U.S. health officials have quarantined 195 Americans evacuated from Wuhan, China, taking the rare step of issuing a mandatory order for the first time in more than 50 years to help contain an outbreak of a new coronavirus that's spread to roughly 10,000 people across the globe. "While we recognize this is an unprecedented action, we are facing an unprecedented public health threat," Dr. Nancy Messonnier, director of the National Center for Immunization and Respiratory Diseases, said on a conference call with reporters Friday.

The Pentagon issued guidance to U.S. troops and civilian personnel serving abroad on how to respond to the coronavirus as a growing number of countries evacuate their citizens and diplomats from parts of China. "We're aware of the concerns. The safety of our service members, civilian employees, and our citizens both here and abroad is of the utmost concern," Army Lt. Col. Dave Eastburn wrote in an emailed statement to CNBC.

Sweden's Public Health Agency said a woman tested positive for coronavirus and was being kept isolated at a hospital in southern Sweden, the country's first confirmed case. The woman visited Wuhan and experienced symptoms after her return to Sweden, the agency said.

Delta Air Lines and American Airlines are planning to suspend their already reduced service to China as the rapid spread of coronavirus hurts demand to the country for airlines around the world. Delta said its China service suspension will begin Feb. 6 and last through April 30, but it will continue to operate the service until then to "ensure customers looking to exit China have options to do so." Dozens of carriers including United, Cathay Pacific, British Airways and others have slashed or suspended service to China because of the outbreak. Delta was the first in the U.S. to suspend service altogether.

Italy declared a six-month state of emergency after two Chinese tourists in the country tested positive for the coronavirus in the first cases detected in the country. The move will enable authorities to make rapid decisions if needed. Italy has already banned all flights to and from China. The two patients came from Wuhan, the epicenter of the virus, and fell ill during their trip to Italy.

The number of confirmed coronavirus cases has risen to 9,782 in mainland China, according to Chinese authorities. The new cases in China bring the global total to nearly 10,000 cases with at least 213 deaths. British health officials confirmed the first two cases of the coronavirus in the U.K., less than 24 hours after the World Health Organization declared the outbreak a global emergency.

Singapore's health ministry banned entry to all Chinese visitors and foreigners with a recent history of travel to China. The move, which effectively shuts out the island's largest group of visitors, takes effect Saturday. It is the first Southeast Asian country to implement a travel ban for China travelers to contain the outbreak. The announcement came after the U.S. State Department raised its travel advisory on Thursday for China from Level 3 to Level 4. Mongolia also said it's closing all ports of entry to and from China, giving citizens until Feb. 6 to get home.

The film "Enter the Fat Dragon" will premiere via video streaming on Saturday, makers China iQiyi Inc said, after plans for the film's premiere in theaters were affected by the outbreak. It will be the second film to debut online because of the outbreak following Huanxi Media Group's decision to premiere "Lost in Russia" on Bytedance's online platforms.

Read CNBC's coverage from our Asia-Pacific team overnight: China says coronavirus death toll hits 213 as Britain, Russia report first cases

— Reuters and CNBC's Sam Meredith and Riya Bhattacharjee contributed this report.

Correction: An earlier version reported an incorrect figure for mainland China. As of 7:30 a.m. ET, 9,782 cases were reported there, bringing the worldwide total to almost 10,000.