Washington, Aug 4

US President Joe Biden is "still experiencing an occasional cough" after he tested positive for Covid-19 in a rebound case, his physician has said.

The symptom is less frequent than a day earlier, White House physician Dr. Kevin O'Connor wrote in an update on WEdnesday about Biden's recovery.

Fever-free, Biden "continues to feel well" and finished a light workout in the morning but his antigen testing remained positive, Xinhua news agency quoted O'Connor as saying.

Biden, 79, tweeted on Wednesday that he had held a secure phone call with his national security team, alongside a picture of him wearing a mask and sitting behind a desk.

The President had tested positive for Covid-19 on July 21, and was negative on July 26 after days of isolation and treatment.

He tested positive again on July 30 in the "rebound" case, according to the White House.

Biden still experiencing 'occasional cough': Physician