U.S. President Joe Biden’s health has significantly improved, and his primary ailment right now is a scratchy throat, according to his physician.

Since he tested positive for the coronavirus on Thursday, Biden’s cough and body aches have subsided, and he is not suffering any shortness of breath, the doctor, Dr. Kevin O’Connor, stated.

The doctor stated in a memo made public on Sunday that the patient’s pulse, blood pressure, breathing rate, and temperature are all still within normal limits. His current main symptom is a sore throat. His voice is still rather deep.

Earlier on Sunday, White House COVID coordinator Ashish Jha said none of Biden’s 17 identified close contacts have so far tested positive for the coronavirus.

Biden, 79, had mild symptoms, according to the White House. His diagnosis came as a highly contagious subvariant of the coronavirus drives a new wave of cases in the United States.

Jha told CBS News on Sunday that Biden had that BA.5 subvariant and that he had an upper respiratory infection.

The White House has sought to underscore Biden’s ability to work through his illness. On Thursday, it released a video of him reassuring Americans he was doing fine, and on Friday he participated in virtual meetings with White House staff.

The White House has not said where Biden contracted the virus. He recently returned from a trip to the Middle East and held public events before that trip in which he had close personal interactions with scores of people.

Biden’s diagnosis is the latest challenge he has faced amid threats to his policy agenda on Capitol Hill and high inflation putting his fellow Democrats at risk of losing control of Congress in the November midterm elections.