The delta variant now accounts for more than 83 percent of new Covid-19 cases, Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, said Tuesday.
Walensky spoke during a hearing of the Senate Committee on Health, Education, Labor and Pensions.
As of July 17, the latest date for which data was available, the delta variant accounted for 83.2 percent of new Covid-19 cases that had been genetically sequenced in the country. The CDC is expected to publish these latest statistics online Tuesday afternoon.
The rise in the delta variant coincides with a large increase in Covid-19 cases, hospitalizations and deaths nationwide in the U.S., the CDC said last week.
The surge in cases involving the “hypertransmissible” variant was not unexpected. Such infections had been predicted to double every few weeks.
Just one month ago, on June 19, the delta variant accounted for just over 30 percent of new cases. On July 3, it crossed the 50 percent threshold to become the dominant variant in the country.