Delta variant accounts for 83% of U.S. cases, CDC says; ‘vaccination is the most powerful tool we have’

photo by: J. Scott Applewhite, AP/Pool

Dr. Rochelle Walensky, left, director of the Centers for Disease Control and Prevention, and top infectious disease expert Dr. Anthony Fauci, center, are greeted by Sen. Richard Burr, R-N.C., to the Senate Health, Education, Labor and Pensions Committee on Capitol Hill in Washington, Tuesday, July 20, 2021.

NEW YORK — Health officials say the delta variant of the coronavirus continues to surge and accounts for an estimated 83% of U.S. COVID-19 cases.

That’s a dramatic increase from the week of July 3, when the variant accounted for about 50% of genetically sequenced coronavirus cases.

“The best way to prevent the spread of COVID-19 variants is to prevent the spread of disease, and vaccination is the most powerful tool we have,” said Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, during a U.S. Senate hearing Tuesday.

The delta variant is a mutated coronavirus that spreads more easily than other versions. It was first detected in India but now has been identified around the world.


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