President Joe Biden "unsurprisingly" tested positive again for COVID-19 on Sunday but "continues to feel" well after he tested positive again over the weekend, according to his doctor in a letter issued on Sunday.
“As I have stated previously, the president continues to be very specifically conscientious to protect any of the Executive Residence, White House, Secret Service, and other staff whose duties require (albeit socially distanced) proximity to him,” the physician wrote Sunday.
Biden tested positive for COVID-19 less than two weeks ago and began taking Pfizer-made Paxlovid, according to the doctor. He received a negative test on Tuesday and ended his quarantine, but on Saturday, O'Connor said he tested positive again although he has no symptoms.
PaxlovidOn Saturday, O'Connor said that Biden was among the "small percentage" of people taking Paxlovid who had a "rebound" of COVID-19 symptoms. Among other notable "COVID rebound" cases is White House adviser Anthony Fauci, who said he took Paxlovid, tested negative for several consecutive days for COVID-19, and later returned a positive test.
Earlier this year, the U.S. Centers for Disease Control and Prevention issued an alert about COVID-19 rebound cases associated with Paxlovid.
“Paxlovid continues to be recommended for early-stage treatment of mild to moderate COVID-19 among persons at high risk for progression to severe disease,” said the agency in a notice. “Paxlovid treatment helps prevent hospitalization and death due to COVID-19. COVID-19 rebound has been reported to occur between 2 and 8 days after initial recovery and is characterized by a recurrence of COVID-19 symptoms or a new positive viral test after having tested negative.”