Omicron Variant Dominates While Delta Disappeared

According to data from the U.S. CDC's NowCast system, the SARS-CoV-2 coronavirus variant knowns as Omicron continues to dominate in the U.S.

As of February 19, 2022, NowCast reported the Delta variant was not identified last week.

And the Omicron BA.1.1 sub-variant was found about 75% in samples.

The CDC says 'New variants of SARS-CoV-2 are expected to continue to emerge. Some variants will emerge and disappear, while others will emerge and continue to spread and may replace previous variants.'

Furthermore, 'rapid virus genomic sequencing data combined with phenotypic data are further used to determine whether COVID-19 tests, treatments, and vaccines authorized or approved for use in the U.S. will work against emerging variants.'