 And some Democrats say President Biden should use his time off the campaign trail to reconsider his reelection bid. He had been campaigning in Nevada, but will now isolate in his home state of Delaware after testing positive for COVID. The president's doctor says he has mild symptoms, including general malaise, and that he received his first dose of the antiviral pill Paxlovid. CBS News contributor Dr. Celine Gounder says the president's diagnosis comes amid an upswing in COVID cases nationally.