Biden Tests Positive for COVID-19 Again, Returns to Isolation

President Joe Biden during a meeting in the South Court Auditorium of the Eisenhower Executive Office Building, next to the White House, in Washington, on July 28, 2022. Mandel Ngan/AFP via Getty Images

President Joe Biden tested positive for COVID-19 again on Saturday morning, the president’s physician said.

Dr. Kevin O'Connor, the White House physician, said in a letter that it’s a rare “rebound” case usually observed in a small percentage of patients treated with Paxlovid.