"I think I was wrong then about the path that inflation would take," Yellen told CNN's Wolf Blitzer on "The Situation Room" when asked about her comments from 2021 that inflation posed only a "small risk."

The admission was the latest indication that the administration's expectations of a normalizing economy were thrown into disarray by the continuing pandemic and the war in Europe.

"As I mentioned, there have been unanticipated and large shocks to the economy that have boosted energy and food prices and supply bottlenecks that have affected our economy badly that I didn't – at the time – didn't fully understand, but we recognize that now," she said.