The U.S. government's foremost infection disease expert says the United States could experience more than 100,000 deaths and millions of infections from the coronavirus pandemic.

Dr. Anthony Fauci, speaking on CNN's “State of the Union” on Sunday, offered his prognosis as the federal government weighs rolling back guidelines on social distancing in areas that have not been hard-hit by the outbreak at the conclusion of the nationwide 15-day effort to slow the spread of the virus.

“I would say between 100,000 and 200,000 cases,” he said, correcting himself to say he meant deaths. “We're going to have millions of cases.” But he added “I don't want to be held to that” because the pandemic is “such a moving target.”