August 5, 2021

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Delta variant now accounts for 83% of all sequenced Covid cases in the U.S., CDC Director Walensky says – CNBC

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A mobile Covid-19 vaccination centre outside Bolton Town Hall, Bolton, where case numbers of the Delta variant first identified in India have been relatively high.

Peter Byrne | PA Images | Getty Images

The delta variant first identified in India is now estimated to make up 83% of all sequenced Covid-19 cases in the U.S., the director of the Centers for Disease Control and Prevention said Tuesday.

“This is a dramatic increase from up from 50%, the week of July 3,” CDC Director Dr. Rochelle Walensky said during a Senate hearing.

The surge in delta cases is leading to more deaths. Covid fatalities have risen by nearly 48% over the past week to an average of 239 per day, she said.

“Each death is tragic and even more heartbreaking when we know that the majority of these deaths could be prevented with a simple, safe, available vaccine,” she said.

Walensky said nearly two-thirds of the counties in the U.S. have vaccinated less than 40% of their residents, “allowing for the emergence and rapid spread of the highly transmissible delta variant.”

The variant is even more contagious than the alpha variant, which was first identified in the U.K. and was estimated by public health officials there to be between 43% and 90% more transmissible than the original Covid-19 strain. Discovered in October, delta has since spread to more than 100 countries, according to World Health Organization data.

“The reason it’s so formidable is the fact that it has the capability of transmitting efficiently from human to human in an extraordinary manner, well beyond any of the other variants that we’ve experienced, up to now,” Dr. Anthony Fauci, the White House’s chief medical advisor, said during the hearing.

CNBC Health & Science

This is breaking news. Please check back for updates.

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