omicron January 7, 2022 9:53 am CDC Director: ‘I Don't Believe We've Seen the Peak Yet' Centers for Disease Control and Prevention Director Dr. Rochelle Walensky says she doesn’t believe the U.S. has reached the peak of the omicron coronavirus wave impacting the country. US & World Videos 1:31 CDC recommends updated Covid shot for everyone ages 6 months and up