Trump said to be improving but next 48 hours ‘critical’

Dr. Sean Conley, physician to President Donald Trump, briefs reporters at Walter Reed National Military Medical Center in Bethesda, Md., Saturday. (AP Photo/Susan Walsh)

BETHESDA, Md. — President Donald Trump went through a “very concerning” period Friday and faces a “critical” next two days in his fight against COVID-19 at a military hospital, his chief of staff said Saturday — in contrast to a rosier assessment moments earlier by Trump doctors, who took pains not to reveal the president had received supplemental oxygen at the White House before his hospital admission.