Medical personnel wearing protective suits stay near a block's entrance on the grounds of a residential estate in Hong Kong, early on February 11, 2020, after two people in the block were confirmed to have contracted the new coronavirus, according to local newspaper reports. (Photo by Anthony Wallace/AFP Photo)





Medical workers in protective suits move a novel coronavirus patient at an isolated ward of a designated hospital in Wuhan, Hubei province, China on February 6, 2020. (Photo by Reuters/China Daily)





A police officer wears a mask as he walks in front of the Oriental Pearl Tower, as the country is hit by an outbreak of a new coronavirus, in Lujiazui financial district in Pudong, Shanghai, China, February 5, 2020. (Photo by Aly Song/Reuters)





An interior view of the Hongshan Gymnasium in Wuhan, central China's Hubei Province on February 4, 2020. Wuhan in central China's Hubei Province started converting three existing venues, including a gymnasium and an exhibition center, into hospitals to receive patients infected with the novel coronavirus (2019-nCoV), the headquarters for the epidemic control said late Monday. (Photo by Chine Nouvelle/SIPA Press/Rex Features/Shutterstock)





A woman wearing a face mask walks on the Qianmen pedestrian street in the morning after the extended Lunar New Year holiday caused by the novel coronavirus outbreak, in Beijing, China on February 10, 2020. (Photo by Carlos Garcia Rawlins/Reuters)





In this February 4, 2020, file photo, members of a Chinese honor guard wear face masks as they march in formation near the Great Hall of the People on Tiananmen Square in Beijing. China’s ruling Communist Party faces a politically fraught decision: Admit the outbreak of a new virus 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 Mark Schiefelbein/AP Photo/File)





A woman wearing protective gear sits on the subway on February 10, 2020 in Beijing, China. February 10 marks the end of the Chinese New Year holidays, that were extended due to the outbreak of novel coronavirus, however, the Chinese capital remains empty and business does not seem to resume. (Photo by Andrea Verdelli/Getty Images)





In this February 5, 2020, file photo, a security guard wears a face mask as he walks along a pedestrian shopping street during a snowfall in Beijing. China’s ruling Communist Party faces a politically fraught decision: Admit the outbreak of a new virus 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 Mark Schiefelbein/AP Photo/File)





This photo taken on February 11, 2020 shows a sanitation vehicle disinfecting the street in Tengzhou in China's eastern Shandong province. The number of fatalities from China's COVID-19 coronavirus epidemic jumped to 1,113 nationwide on February 12 after another 97 deaths were reported by the national health commission. (Photo by AFP/China Stringer Network)





In this Tuesday, February 11, 2020, photo released by China's Xinhua News Agency, a drone carries a QR code placard near an expressway toll station in Shenzhen in southern China's Guangdong Province. As a measure to help prevent and control novel coronavirus, an online register system for vehicles coming back to Shenzhen has been put into use since Feb. 8. To increase the efficiency, local police officers used drones to carry a QR code at the expressway exits for drivers to get registered with less contact with other people. (Photo by Lai Li/Xinhua via AP Photo)





In this photo released by Xinhua News Agency technicians work on a second generation disinfection robot in a technological company in Qingdao, eastern China's Shandong Province on Tuesday, February 11, 2020. Qingdao has called on technological companies to research, develop and refit disinfection robots which can replace human in disinfection operations for possible use in isolation wards of hospitals. (Photo by Li Ziheng/Xinhua via AP Photo)





A passenger wearing a mask walks outside the Shanghai railway station in Shanghai, China, as the country is hit by an outbreak of the novel coronavirus, February 8, 2020. (Photo by Aly Song/Reuters)





A worker is seen inside a convenience store following an outbreak of the novel coronavirus in Wuhan, Hubei province, February 11, 2020. (Photo by Reuters/China Stringer Network)





Workers operate a vehicle to carry out disinfection in Jianghan district, following an outbreak of the novel coronavirus in Wuhan, Hubei province, China February 10, 2020. (Photo by Reuters/China Daily)





An employee wearing a face mask walks through a device that sprays disinfectant at an entrance to a company in Chongqing, China, February 10, 2020. (Photo by Cnsphoto via Reuters)





A man wearing a face mask keeps watch at an entrance to a residential community fenced in with temporary barriers, in Yichang city of Hubei, the Chinese province hit hardest by the coronavirus outbreak, February 10, 2020. (Photo by Reuters/China Daily)





A man holding a loudspeaker sits on a motorcycle as it travels past a sanitizing vehicle disinfecting the area near residential buildings, in Panyu district of Guangzhou, Guangdong province, February 11, 2020. (Photo by Reuters/China Daily)





Workers of the ecology and environment bureau collect samples from the sewage system of a hospital in Xinle, Hebei province, February 8, 2020. (Photo by Reuters/China Daily)





A medical worker in a protective suit takes a break during her night shift at a community health service center, which has an isolated section to receive patients with mild symptoms caused by the coronavirus and suspected patients, in Qingshan district of Wuhan, Hubei province, February 9, 2020. (Photo by Reuters/China Daily)





A man wearing a face mask rides an escalator inside a shopping mall, following an outbreak of the novel coronavirus, in Beijing, China on February 12, 2020. (Photo by Tingshu Wang/Reuters)





A medical worker in a protective suit pushes his electric bicycle up a hill as he visits villagers for body temperature measurements at a village in Luzhou, Sichuan province, February 10, 2020. (Photo by Reuters/China Daily)





A couple poses with face masks and marriage certificates outside a registry of marriage on Valentine's Day in Beijing, February 14, 2020. (Photo by Reuters/China Daily)





Dogs wearing masks are seen at a main shopping area, in downtown Shanghai, China, as the country is hit by an outbreak of a new coronavirus, February 16, 2020. (Photo by Aly Song/Reuters)