Chinese paramilitary police wear face masks and goggles as they stand guard behind a screen at Beijing Capital International Airport in Beijing, Saturday, March 28, 2020. China's Ministry of Foreign Affairs announced late Thursday that nearly all foreign nationals - including residence permit-holders - will be barred from entering China starting on Saturday amid a worldwide outbreak of coronavirus. The new coronavirus causes mild or moderate symptoms for most people, but for some, especially older adults and people with existing health problems, it can cause more severe illness or death. (AP Photo/Mark Schiefelbein)