Two passengers wearing masks make their way through the terminal at Frankfurt airport, Germany, Friday March 13, 2020. Due to 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.(Boris Roessler/DPA via AP)

March 13, 2020