President Biden tested positive for COVID-19 again Thursday and is still experiencing "a very occasional cough" which is "improving," his physician said in a letter.
The big picture: Biden had tested negative following his first bout with the virus last week after finishing his five-day course of the treatment Paxlovid. But the president has tested positive for a "rebound" case of COVID since Saturday.
Be smart: "Rebound" cases of COVID are possible for those who take Paxlovid, but it remains relatively rare, a Mayo Clinic study released in June found.
What he's saying: The president "feels very well," Biden's doctor, Kevin O'Connor wrote on Thursday.
