Doctor: Biden tests positive for COVID for 2nd day in a row

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FILE - President Joe Biden coughs as he speaks about "The Inflation Reduction Act of 2022"inthe State Dining Room of the White House in Washington, Thursday, July 28, 2022. Biden tested positive for COVID-19 again Saturday, July 30, slightly more than three days after he was cleared to exit coronavirus isolation, the White House said, in a rare case of rebound following treatment with an anti-viral drug. (AP Photo/Susan Walsh, File)

WASHINGTON – President Joe Biden tested positive for COVID-19 for the second straight day, in what appears to be a rare case of “rebound” following treatment with an anti-viral drug.

In a letter noting the positive test, Dr. Kevin O'Connor, the White House physician, said Sunday that the president “continues to feel well” and will keep on working from the executive residence while he isolates.

Biden tested positive on Saturday, requiring him to cancel travel and in-person events as he isolates for at least five days in accordance with Centers for Disease Control and Prevention guidelines.

After initially testing positive on July 21, Biden, 79, was treated with the anti-viral drug Paxlovid. He tested negative for the virus this past Tuesday and Wednesday, clearing him to leave isolation while wearing a mask indoors.

Research suggests that a minority of those prescribed Paxlovid experience a rebound case of the virus. The fact that a rebound rather than a reinfection possibly occurred is a positive sign for Biden's health once he's clear of the disease.

“The fact that the president has cleared his illness and doesn’t have symptoms is a good sign and makes it less likely he will develop long COVID,” said Dr. Albert Ho, an infectious disease specialist at Yale University’s school of public health.