Paramilitary police stand guard at an entrance to the closed Hankou Railway Station in Wuhan in central China's Hubei Province, Thursday, Jan. 23, 2020. China closed off a 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. (Thepaper via AP)