Post Politics Now: Senate Democrats seeking a big win by week’s end

Biden, 79, first tested positive for the coronavirus on July 21, a Thursday, and began taking Paxlovid, an antiviral therapy that has proved highly effective in tackling coronavirus symptoms. After the president’s original positive test result, O’Connor said Biden — who is fully vaccinated against the coronavirus and has received two booster shots — should respond well to Paxlovid, “as most maximally protected patients do.”

After daily monitoring, Biden tested negative the following Tuesday evening. He emerged from his covid-19 isolation Wednesday with a speech in the Rose Garden touting his relatively short isolation and mild symptoms as a testament to his administration’s progress on the pandemic. He urged people to take advantage of vaccine boosters, antivirals and at-home tests as well.

Biden tested negative Wednesday morning, Thursday morning and Friday morning, before testing positive again Saturday morning using an antigen test. Biden and his doctor said he was experiencing no symptoms during the rebound infection.