The director of the Centers for Disease Control and Prevention has tested positive for COVID-19 — one month after she publicly celebrated getting her booster shot. Dr. Rochelle Walensky, who tested positive Friday night, is “experiencing mild symptoms,” according to a release posted to social media. “She is isolating at home and will participate in her planned meetings virtually.” On Sept. 22, Walensky tweeted a picture of herself getting jabbed with an updated version of the COVID-19 shot, along with a message urging others to follow her lead. “Laboratory data suggest these updated vaccines provide increased protection against currently circulating variants,” she promised. Pfizer formulated the “tweaked” version of the shot to better target the dominant Omicron variant, the company said. Its studies on the new jab did not track how well the updated booster prevented COVID-19 cases, or discover how long its added protection would last.