coronavirus March 1, 2021 8:46 am CDC Director ‘Worried' About Rolling Back COVID-19 Restrictions Director of the Centers for Disease Control and Prevention Rochelle Walensky says she is concerned about the leveling off in recent declines of COVID-19 cases across the country. US & World Videos 1:58 New XEC COVID-19 variant starting to spread overseas 4:02 Updated COVID vaccines coming 3:12 California experiencing COVID summer surge 1:58 COVID summer surge: CDC data shows cases ‘very high' in California 2:23 Bay Area COVID-19 levels on the rise this summer