Omicron Is Now The Dominant Covid 19 Variant In The U.S.
The estimates capture cases for the week ending December 18, nearly 20 days since the variant was first detected in the U.S. In the week prior, the variant accounted for only 12.6% of positive cases that were sampled. In some parts of the country, including regions of the Northwest and Southeast, Omicron comprises more than 95% of the circulating virus. “I am flabbergasted at how quickly this has happened,” F....