President Joe Biden tested positive for Covid-19 on Thursday, underscoring the persistence of the highly contagious virus as new variants challenge the nation's efforts to resume normalcy after two and a half years of pandemic disruptions. White House Press Secretary Karine Jean-Pierre said that Biden was experiencing mild symptoms" and has begun taking Paxlovid, an antiviral drug designed to reduce the severity of the disease.

She said Biden will isolate at the White House and will continue to carry out all of his duties fully during that time. He has been in contact with members of the White House staff by phone this morning, and will participate in his planned meetings at the White House this morning via phone and Zoom from the residence.