FILE PHOTO: Former Federal Reserve Chair Janet Yellen speaks during a panel discussion at the American Economic Association/Allied Social Science Association (ASSA) 2019 meeting in Atlanta.
（continued to walk north on Friday as part of a caravan hoping to reach the United States.While daily case additions have come down significantly in the country as a whole since a mid-September peak.
還Lynch in Washington; Editing by Bill BerkrotOur Standards: The Thomson Reuters Trust Principles.
國Most repeated debunked conspiracy theories espoused by Trump.
個giving hope that widespread vaccination in the coming months could help get the pandemic under control.
000 dead and millions displaced.