http://www.newsweek.com/what-we-know-omicron-ba-2-variant-under-investigation-u-k-covid-1671701

An Omicron sub-variant known as BA.2 is circulating in a number of countries, and virologists are still working to find out more about it.

The United Kingdom Health Security Agency (UKHSA) on Friday announced that the sub-lineage had been designated as a variant under investigation, though the country has so far seen a relatively low number of cases—426 as of Friday, Reuters reported.