In this Thursday, February 6, 2020, photo, workers in protective suits ride on a truck carrying medical supplies into Huoshenshan temporary hospital built for patients who diagnosed with 2019-nCoV in Wuhan in central China's Hubei province. The number of confirmed cases of the new virus has risen again in China on Saturday as the ruling Communist Party faced anger and recriminations from the public over the death of a doctor who was threatened by police after trying to sound the alarm about the disease over a month ago. (Photo by Chinatopix via AP Photo)





Tourists wear masks at the Peak, a popular tourist spot in Hong Kong, Sunday, February 9, 2020. Health authorities are scrambling to halt the spread of a new virus that has killed hundreds in China, restricting visitors from the country and confining thousands on cruise ships for extensive screening after passengers have tested positive. (Photo by Kin Cheung/AP Photo)





A child runs past passengers wearing masks waiting for their flight in Hong Kong on Sunday, February 9, 2020. China's virus death toll rose above 800, passing the number of fatalities in the 2002-2003 SARS epidemic, but fewer new cases were reported in a possible sign its spread may be slowing as other nations step up efforts to block the disease. (Photo by Ng Han Guan/AP Photo)





In this photo released by Xinhua News Agency, workers disinfect closed shop lots following the coronavirus outbreak, in Jiang'an District of Wuhan in central China's Hubei Province, Monday, February 10, 2020. Mainland China has reported another rise in cases of the new virus after a sharp decline the previous day, while the number of deaths grow over 900, with at least two more outside the country. (Photo by Cheng Min/Xinhua via AP Photo)





A man wearing a protective face mask covered himself with a plastic cover before enters a supermarket in Wuhan in central China's Hubei province, Monday, February 10, 2020. China reported a rise in new virus cases on Monday, possibly denting optimism that its disease control measures like isolating major cities might be working, while Japan reported dozens of new cases aboard a quarantined cruise ship. (Photo by Chinatopix via AP Photo)





A man wearing a mask stands near a pile of bicycles from bike-sharing companies parked outside a subway station in Beijing, Monday, February 10, 2020. (Photo by Andy Wong/AP Photo)





Employees wearing protective face masks at a jewellery shop in Hong Kong, Monday, February 10, 2020. China is reporting a rise in new virus cases, denting optimism that disease control measures which isolated major cities might be working. China reported a rise in new virus cases Monday, possibly denting optimism that disease control measures including isolating major cities might be working, while Japan reported dozens of new cases aboard a quarantined cruise ship. (Photo by Vincent Yu/AP Photo)





A taxi driver looks out from his car as they pile up to wait for customers at the train station in Beijing, Tuesday, February 11, 2020. China's daily death toll from a new virus topped 100 for the first time and pushed the total past 1,000 dead, authorities said Tuesday after leader Xi Jinping visited a health center to rally public morale amid little sign the contagion is abating. (Photo by Andy Wong/AP Photo)





A deliver man uses his phone while waiting on a street of Beijing, China Tuesday, February 11, 2020. China's daily death toll from a new virus topped 100 for the first time and pushed the total past 1,000 dead, authorities said Tuesday after leader Xi Jinping visited a health center to rally public morale amid little sign the contagion is abating. (Photo by Ng Han Guan/AP Photo)





People wearing protective suits stand near the Cheung Hong Estate, a public housing estate, during evacuation of residents in Hong Kong, Tuesday, February 11, 2020. The Centre for Health Protection of the Department of Health evacuated some residents from the public housing estate after a few cases of novel coronavirus infection to stop the potential risk of further spread of the virus. (Photo by Kin Cheung/AP Photo)





Security guards hold the curtain for a cyclist to past through a disinfectant spray in order to return home at a residential complex in northern China's Tianjin Municipality Tuesday, February 11, 2020. China's daily death toll from a new virus topped 100 for the first time and pushed the total past 1,000 dead, authorities said Tuesday after leader Xi Jinping visited a health center to rally public morale amid little sign the contagion is abating. (Photo by Chinatopix via AP Photo)





Customer has lunch with a transparent plastic panel setup on the table to isolate her from others in hopes of stopping the spread of the coronavirus in a Hong Kong, Wednesday, February 12, 2020. China's ruling Communist Party needs to make a politically fraught decision: Admit a viral outbreak isn't under control and cancel this year's highest-profile official event. Or bring 3,000 legislators to Beijing next month and risk fueling public anger at the government's handling of the disease. (Photo by Kin Cheung/AP Photo)





In this photo released by Xinhua News Agency, workers produce face masks in the workshop of a textile company in Jimo District of Qingdao in eastern China's Shandong Province on Wednesday, February 12, 2020. Qingdao Municipal Bureau of Industry and Information Technology has mobilized two large textile companies to produce face masks to help the fight against the novel coronavirus epidemic. (Photo by Liang Xiaopeng/Xinhua via AP Photo)





A traveler stands on a bridge near a display showing government propaganda in the fight against the COVID-19 viral illness in Beijing, China Thursday, February 13, 2020. (Photo by Ng Han Guan/AP Photo)





A delivery man carries goods near a health checkpoint into a office building in Beijing, China Thursday, February 13, 2020. China is struggling to restart its economy after the annual Lunar New Year holiday was extended to try to keep people home and contain novel coronavirus. Traffic remained light in Beijing, and many people were still working at home. (Photo by Ng Han Guan/AP Photo)





A customer wearing mask carries bath tissue papers she bought at a store in Hong Kong, Saturday, February 8, 2020. Widespread panic-buying of essentials such as toilet rolls and rice has hit in Hong Kong, a knock-on effect of the virus outbreak in mainland China. (Photo by Kin Cheung/AP Photo)





A woman wearing a face mask takes selfies after snowfall outside the Forbidden City, as the country is hit by an outbreak of the new coronavirus, in Beijing, China on February 6, 2020. (Photo by Carlos Garcia Rawlins/Reuters)





Traders wearing face masks are seen on the trading floor at a flower auction trading centre following an outbreak of the novel coronavirus in the country, in Kunming, Yunnan province, China on February 10, 2020. (Photo by Cnsphoto via Reuters)





A patient solves a rubik's cube at a temporary hospital converted from “Wuhan Livingroom” in central China's Hubei Province on February 10, 2020. In face of the outbreak of the novel coronavirus pneumonia epidemic, Wuhan authorities have transformed public venues such as exhibition centers and gymnasiums into temporary hospitals. The hospitals have a large capacity of treating patients with mild symptoms and play an important role in isolating the source of infection and cutting off the routes of infection during epidemic prevention. The first batch of patients was hospitalized on Feb. 5. (Photo by Chine Nouvelle/SIPA Press/Rex Features/Shutterstock)





A cleaner wears a mask and goggles as he commutes on a street in Beijing on February 11, 2020. The death toll from a new coronavirus outbreak surged past 1,000 on February 11 as the World Health Organization warned infected people who have not travelled to China could be the spark for a “bigger fire”. (Photo by Greg Baker/AFP Photo)