Rochelle Walensky, director of the Centers for Disease Control and Prevention (CDC), has tested positive for COVID-19 again after completing a round of the coronavirus antiviral treatment Paxlovid. Walensky tested positive for COVID-19 earlier this month, going into isolation and taking “appropriate action” for her health. On Monday, the CDC said Walensky had experienced “mild symptoms” during her infection and eventually tested negative for the virus after completing a round of Paxlovid. “On Sunday, Dr. Walensky began to develop mild symptoms and has again tested positive. Consistent with CDC guidelines, she is isolating at home and will participate in her...