According to statistics from the US Centers for Disease Control and Prevention, the Omicron variation accounted for 58.6% of all coronavirus variants circulating in the US during the week ending Dec. 25. (CDC).

In November, the fast-spreading strain was discovered in southern Africa and Hong Kong, with the first case in the United States being discovered on Dec. 1 in a fully vaccinated person who had gone to South Africa.

According to statistics released by the public health service on Tuesday, the Delta variation accounts for 41.1 percent of all COVID-19 infections in the United States.

The agency said the data includes modeled projection that may differ from weighted estimates generated at later dates.