Reporter: “Has he ever been on supplemental oxygen?”

Dr. Conley: ” Right now he is not on oxygen.”

President Trump’s doctor says he isn't currently on oxygen, nor has he had difficulty breathing, “more than anything he’s felt run down.”

Donald Trump’s physician said the president is “doing very well” and his condition is improving while being treated at a U.S. military hospital near Washington for Covid-19.

Trump’s campaign manager Bill Stepien tested positive, as did former White House Senior Adviser Kellyanne Conway and former New Jersey Governor Chris Christie. Three Republican senators have tested positive in the past day, and another has decided to quarantine despite testing negative. Vice President Mike Pence is said to have tested negative on Saturday morning.