Flight attendants of an Asian airline wear face masks as they arrive at the airport in Frankfurt, Germany, Wednesday, March 11, 2020. Due to the spread of the Coronavirus a large number of flights have to be cancelled. For most people, the new coronavirus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia. (AP Photo/Michael Probst)

March 12, 2020