Fauci Warns Dangerous Delta Variant Is The Greatest Threat To U.S. COVID Efforts

The dangerous Delta variant of the coronavirus is spreading so quickly in the United States that it's likely the mutant strain will become predominant in the nation within weeks, according to federal health officials and a new analysis.

At a White House briefing on COVID-19 on Tuesday, Dr. Anthony Fauci of the National Institutes of Health said 20.6% of new cases in the U.S. are due to the Delta variant. And other scientists tracking the variant say it is on track to become the dominant virus variant in the U.S.

"The...