Omicron is starting to eat into Delta’s U.S. dominance --CDC data

CDC data indicate Omicron is starting to eat into Delta's U.S. dominance New CDC data show that the Omicron coronavirus variant is starting to eat into the Delta variant’s dominance in the U.S. Andrew Joseph STAT

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The new variant accounted for 2.9% of sequenced Covid-19 cases in the United States in the week ending Dec. 11. The week before, 0% of cases were from Omicron. Delta accounted for essentially all of the other sequenced cases, according to data from the Centers for Disease Control and Prevention.

The new figures, updated Tuesday, indicate that Omicron started circulating before that week, given how long it can take for infections to be sequenced and reported. They show that Omicron’s advantage over the highly transmissible Delta variant is becoming noticeable in this country. ...