CDC chief says U.S. COVID cases likely have not yet peaked

The Omicron-driven surge in U.S. COVID-19 cases has likely not topped out yet, the head of the Centers for Disease Control and Prevention said on Friday as schools, hospitals and businesses struggle with rising caseloads.

"I don't believe we've seen the peak yet here in the United States," CDC Director Rochelle Walensky told NBC News' "Today" program.