An arriving passenger's temperature is checked Feb. 4, 2020, at the Shanghai Pudong International Airport in Shanghai. The outbreak of the new virus threatens to erase $29 billion of this year's revenue for global airlines, mostly for Chinese carriers, according to the International Air Transport Association. Global air traffic will be reduced by 4.7% for the year, the IATA said. (Noel Celis/AFP/Getty Images/NOEL CELIS/AFP/Getty Images North America/TNS)