GUAGZHOU, CHINA – JANUARY 22: Citizens wear masks to defend against new viruses on January 22,2020 in Guangzhou, China.The 2019 new coronavirus, known as “2019-nCoV”, was discovered in Wuhan virus pneumonia cases in 2019, and the virus was transmitted from person to person. Currently, confirmed cases have been received in various parts of the world. (Photo by Stringer/Anadolu Agency via Getty Images)
Travelers from China’s Wuhan and other cities go through body temperature scanners at Narita international airport in Narita, near Tokyo, Thursday, Jan. 23, 2020. China closed off the city of more than 11 million people Thursday in an unprecedented effort to try to contain a deadly new viral illness that has sickened hundreds and spread to other cities and countries in the Lunar New Year travel rush. (AP Photo/Eugene Hoshiko)
