KEY POINTS
  • The State Department warned U.S. citizens against traveling abroad, an unprecedented move.
  • The advisory, the highest of its kind, would instruct all Americans abroad to either return to the U.S. or prepare to shelter in place.
  • Airlines are scrambling to cut flights and other costs as travel demand plummets.
Passengers wear masks as they arrive at Dulles International airport in Dulles, Virginia on March 17, 2020.

WASHINGTON — The State Department on Thursday told Americans to avoid all international travel and that U.S. citizens abroad should return immediately because of the coronavirus pandemic, an unprecedented warning from the agency as the disease spreads.

The State Department's level 4 warning, the highest of its kind, comes as nations around the world are scrambling to stem the spread of the coronavirus, known as COVID-19. The disease has infected more than 236,000 worldwide, though many have recovered. In the U.S. 11,238 cases have been reported so far.