A woman, right, wears a face mask selects garbage at a supermarket in Hangzhou in east China's Zhejiang province, Saturday, February 8, 2020. China's communist leaders are striving to keep food flowing to crowded cities despite anti-disease controls, to quell fears of possible shortages and stave off price spikes from panic buying after most access to Wuhan was cut off Jan. 23. Food stocks in supermarkets ran low shortly after Beijing imposed travel curbs and extended the Lunar New Year holiday to keep factories, offices and other businesses closed and the public at home, attempting to prevent the virus from spreading. (Photo by Chinatopix via AP Photo)





In this Friday, January 31, 2020, photo released by China's Xinhua News Agency, people wearing face masks walk past buildings lit up with slogans of encouragement in Wuhan in central China's Hubei Province. The United States on Friday declared a public health emergency and took drastic steps to significantly restrict entry into the country because of a new virus that hit China and has spread to other nations. (Photo by Xiao Yijiu/Xinhua via AP Photo)





A woman wears a face mask as she pushes a bicycle along a street in Beijing, Saturday, February 1, 2020. China's death toll from a new virus rose to 259 on Saturday and a World Health Organization official said other governments need to prepare for “domestic outbreak control” if the disease spreads in their countries. (Photo by Mark Schiefelbein/AP Photo)





Two girls with face masks ride the subway in Hong Kong, Saturday, February 1, 2020. China’s death toll from a new virus has risen to 259 and a World Health Organization official says other governments need to prepare for“domestic outbreak control” if the disease spreads. (Photo by Kin Cheung/AP Photo)





A woman wears a face mask as she shops at a grocery store in Beijing, Saturday, February 1, 2020. (Photo by Mark Schiefelbein/AP Photo)





A maintenance worker wears a face mask as she sweeps snow during a snowfall in Beijing, Sunday, February 2, 2020. China's death toll from a new virus increased to 304 on Sunday amid warnings from the World Health Organization that other countries need to prepare in the event the disease spreads among their populations as more nations report local infections. (Photo by Mark Schiefelbein/AP Photo)





Volunteers stand beneath a Communist Party flag as they man a barricade checkpoint at a village in Hangzhou in eastern China's Zhejiang Province, Monday, February 3, 2020. China sent medical workers and equipment to a newly built hospital, infused cash into financial markets and further restricted people's movement in sweeping new steps Monday to contain a rapidly spreading virus and its escalating impact. (Photo by Chinatopix via AP Photo)





People wear protective face masks in a bus in Hong Kong, Tuesday, February 4, 2020. Hong Kong on Tuesday reported its first death from a new virus, a man who had traveled from the mainland city of Wuhan that has been the epicenter of the outbreak. (Photo by Vincent Yu/AP Photo)





A patient waits as medical workers in protective suits prepare to collect a sample for nucleic acid tests at a hotel being used to place suspected virus patients in medical isolation in Wuhan in central China's Hubei Province, Tuesday, February 4, 2020. Hong Kong hospitals cut services as thousands of medical workers went on strike for a second day Tuesday to demand the border with mainland China be shut completely, as a new virus caused its first death in the semi-autonomous territory and authorities feared it was spreading locally. (Photo by Chinatopix via AP Photo)





In this Wednesday, February 5, 2020, photo, medical workers in a protective suit help patients who diagnosed with the coronaviruses as they arrive at a temporary hospital which transformed from an exhibition center in Wuhan in central China's Hubei province. Ten more people were sickened with a new virus aboard one of two quarantined cruise ships with some 5,400 passengers and crew aboard, health officials in Japan said Thursday, as China reported 73 more deaths and announced that the first group of patients were expected to start taking a new antiviral drug. (Photo by Chinatopix via AP Photo)





A man wearing face mask stands near an empty shelf of rice at a supermarket in Hong Kong, Thursday, February 6, 2020. Ten more people were sickened with a new virus aboard one of two quarantined cruise ships with some 5,400 passengers and crew aboard, health officials in Japan said Thursday, as China reported 73 more deaths and announced that the first group of patients were expected to start taking a new antiviral drug. (Photo by Vincent Yu/AP Photo)





A maintenance worker wearing a face mask sweeps snow near Qianmen Gate during a snowfall in Beijing, Wednesday, February 5, 2020. Deaths from a new virus rose to 490 in mainland China on Wednesday while new cases on a Japanese cruise ship, in Hong Kong and in other places showed the increasing spread of the outbreak and renewed attention toward containing it. (Photo by Mark Schiefelbein/AP Photo)





A woman's eyeglasses are fogged up as she wears a face mask during a snowfall in Beijing, Sunday, February 2, 2020. China's death toll from a new virus increased to 304 on Sunday amid warnings from the World Health Organization that other countries need to prepare in the event the disease spreads among their populations as more nations report local infections. (Photo by Mark Schiefelbein/AP Photo)





Volunteers in protective suits disinfect a railway station as the country is hit by an outbreak of the new coronavirus, in Changsha, Hunan province, China on February 4, 2020. (Photo by Cnsphoto via Reuters)





A man wearing a protective face mask swims in a partly-frozen lake as snow falls in Beijing on February 6, 2020. The number of confirmed infections in China s coronavirus outbreak has reached 28,018 nationwide with 3,694 new cases reported, the National Health Commission said on February 6. (Photo by Wang Zhao/AFP Photo)





People wear face masks as they walk in public park on a snowy day in Beijing, Sunday, February 2, 2020. The Philippines on Sunday reported the first death from a new virus outside of China, where authorities delayed the opening of schools in the worst-hit province and tightened quarantine measures in a city that allow only one family member to venture out to buy supplies. (Photo by Miriam Saleh via AP Photo)





People wearing face masks ride a mostly empty subway train during the morning rush hour in Beijing, Monday, February 3, 2020. Much of China officially went back to work on Monday after the Lunar New Year holiday was extended several days by the government due to a virus outbreak, but China's capital remained largely empty as local officials strongly encouraged non-essential businesses to remain closed or work from home. (Photo by Mark Schiefelbein/AP Photo)





In this February 3, 2020, file photo, a security officer wearing a face mask stands on a subway train in Beijing. Health authorities are preparing for a possible pandemic as they work to contain a respiratory illness in China that's caused by a new virus. Governments are working to contain the virus by limiting travel, isolating sick people and keeping travelers returning from the affected region under quarantine to watch for symptoms. (Photo by Mark Schiefelbein/AP Photo/File)





In this February 1, 2020, photo, funeral home workers remove the body of a person suspect to have died from a virus outbreak from a residential building in Wuhan in central China's Hubei Province. The Philippines on Sunday reported the first death from a new virus outside of China, where authorities delayed the opening of schools in the worst-hit province and tightened quarantine measures in a city that allow only one family member to venture out to buy supplies. (Photo by Chinatopix via AP Photo)





Wuhan International Expo Center medical materials warehouse, Wuhan City, Hubei Province, China, February 4, 2020. All kinds of trucks transport all kinds of medical materials from one vehicle here. Volunteers from the Alumni Association of Huazhong University of science and technology and Wuhan Bus Group station company remove all kinds of medical materials from the truck, and then the professional logistics personnel register and place them in the classification site. The materials on site are stacked in order, which greatly improves the efficiency of medical units receiving materials here. (Photo by Costfoto/Barcroft Media via Getty Images)





A Buddhist monk wearing a protective mask pats a dog at the Po Lin Monastery in Hong Kong, China on February 4, 2020. (Photo by Paul Yeung/Bloomberg)





A Chinese woman wears a protective mask as she shops in a market on February 6, 2020 in Beijing, China. The number of cases of a deadly new coronavirus rose to more than 28000 in mainland China Thursday, days after the World Health Organization (WHO) declared the outbreak a global public health emergency. China continued to lock down the city of Wuhan in an effort to contain the spread of the pneumonia-like disease which medicals experts have confirmed can be passed from human to human. In an unprecedented move, Chinese authorities have put travel restrictions on the city which is the epicenter of the virus and municipalities in other parts of the country affecting tens of millions of people. The number of those who have died from the virus in China climbed to over 564 on Thursday, mostly in Hubei province, and cases have been reported in other countries including the United States, Canada, Australia, Japan, South Korea, India, the United Kingdom, Germany, France and several others. The World Health Organization has warned all governments to be on alert and screening has been stepped up at airports around the world. Some countries, including the United States, have put restrictions on Chinese travelers entering and advised their citizens against travel to China. (Photo by Kevin Frayer/Getty Images)