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FILE - In this Feb. 11, 2015, file photo outgoing Ebola czar Ron Klain listens as President Barack Obama speaks about the Ebola outbreak response by the U.S. in West Africa in the South Court Auditorium of the White House complex in Washington. Klain is preparing to serve as President-elect Joe BidenâÄ™s chief of staff, a job often referred to as the nationâÄ™s chief operating officer. (AP Photo/Jacquelyn Martin, File)