The director of the Centers for Disease Control and Prevention is back in isolation at home, after testing positive again for COVID-19. Dr. Rochelle Walensky, 53, first had a positive test on Oct 21. She then tested negative after completing a regimen of the antiviral Paxlovid, but mild symptoms returned Sunday, the AP reports. The CDC said Monday that Walensky will participate in meetings online, per the Hill. (More Rochelle Walensky stories.)