Dr. Deborah Birx, coordinator of the White House coronavirus response, said Tuesday she plans to retire, but is willing to first help President-elect Joe Biden’s team with its coronavirus response as needed. Birx, in an interview with the news site Newsy, did not give a specific timetable on her plans. “I will be helpful in any role that people think I can be helpful in, and then I will retire,” Birx told the news outlet.