CDC: Omicron Accounts for 90 Percent of COVID-19 Cases in Some Parts of US

Dr. Rochelle Walensky, the director of the Centers for Disease Control and Prevention, is seen in Washington in a file photograph. Greg Nash/Pool/Getty Images

The head of the Centers for Disease Control and Prevention (CDC) said the Omicron variant accounts for more than 90 percent of COVID-19 cases in some parts of the United States.

CDC director Dr. Rochelle Walensky said the variant makes up to 90 percent of infections in the South, Midwest, eastern Atlantic states, and northern Pacific states.