AdvertisementCDC is criticized for failing to communicate, promises to do betterJanuary 07, 2022Selena Simmons-DuffinfacebookEmailDr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, testifies at a Senate hearing. The agency has come under criticism for not holding regular briefings. This week, Walensky pledged to hold regular briefings moving forward. (CQ-Roll Call Inc. via Getty Images)