Medical staff work in the negative-pressure isolation ward in Jinyintan Hospital, designated for critical COVID-19 patients, in Wuhan, in central China's Hubei province, on February 13, 2020. #

A teacher takes part in a recording of her lessons inside a classroom in a middle school, as students' return to school has been delayed because of the novel coronavirus outbreak, in Shaoyang, Hunan province, China, on February 16, 2020. #

Several negative-pressure protection and monitoring ambulances are loaded onto a train bound for Wuhan in Nanchang, in China's central Jiangxi province, on February 12, 2020. #

Liu Xiaojin adjusts a phone used to live-stream trainer Wang Kai's gym class, as the country endures an outbreak of the new coronavirus, in Beijing, on February 14, 2020. #

Two workers wearing face masks stand in a promotional kiosk for the Disney move "Mulan" in an almost empty shopping mall in Beijing on February 16, 2020. Disney was hoping its new film, based on the tale of a legendary Chinese warrior, would be a huge hit with Chinese audiences. Now the U.S. entertainment giant, which will also face losses from closing its Disneyland parks in China and Hong Kong in response to the coronavirus outbreak, can't even be sure when the film will open. #

A policeman in protective gear waits to evacuate residents from a public-housing building outside Hong Mei House, at Cheung Hong Estate in Hong Kong, China, on February 11, 2020. #

A community worker sorts donated vegetables for members of households inside a residential compound, following the outbreak of the novel coronavirus in Wuhan, on February 11, 2020. #

Jia, 29, and his wife, Su, 28, pose with face masks and marriage certificates at a marriage registry office on Valentine's Day in Shanghai, China, on February 14, 2020. #

A member of the medical staff wears protective gear while leading patients who have displayed mild symptoms of the COVID-19 coronavirus in group exercises at an exhibition center converted into a hospital in Wuhan on February 17, 2020. #

A worker installs plastic film to separate the front seats from the back, inside a vehicle for a car-hailing service in Taiyuan, Shanxi province, on February 14, 2020. #

On Valentine's Day, in an isolation ward in Yangzhou Third People's Hospital, two doctors make a heart gesture through glass in Yangzhou, Jiangsu province, on February 14, 2020. #

Marks left after wearing a mask are seen on the face of Nurse Cao Shan, who was working in the isolation ward in Jinyintan Hospital, designated for COVID-19 patients, in Wuhan, on February 17, 2020. #