The First Lady began to develop cold-like symptoms late in the evening, after testing negative for COVID-19 on Monday during her routine testing pool, Elizabeth Alexander, communications director, said in a statement. He again tested negative in a rapid antigen test, but a PCR test came back positive.
Alexander said the first lady has been prescribed a course of PaxLovid and is experiencing “only mild symptoms.” She said Biden would be isolated from others for at least five days and that close contacts would be notified.
President Joe Biden tested positive last month and, after being treated with Paxlovid, experienced a rebound of the virus.
The Bidens are holidaying in Kiawah Island. The president is due to return to the White House on Tuesday to sign the Inflation Reduction Act since last week, and then later fly to his home in Wilmington.
About two weeks after the first test turned positive, the president tested negative on August 7. He too fell into isolation and after six days returned to the public event, returning to the public event. But he tested positive again on July 30, and returned to isolation a week later.