CDC chart shows how Omicron went from 0.7% to 73% of US COVID-19 cases in just 2 weeks

• The highly transmissible Omicron variant quickly become dominant in the US.
• A CDC chart shows just how fast it took over after it was first detected.

A striking chart shows how quickly the Omicron variant shot to dominance in the US.

It was produced by the US Centers for Disease Control and Prevention, which dropped new data on Monday on Omicron's prevalance.

It said the variant made up 73% of the cases in the country in the week ending December 18, relegating the once-dominant Delta variant to minority status.

The variant is highly transmissible. It only made up 0.7% of cases in the US in the week ending on December 4.

Here is the chart as shown on the CDC website:

B.167.2 refers to the Delta variant, which was previously dominant in the US, and B.1.1.529 refers to the Omicron variant.

Click here for Insider's full coverage of the emergence of the Omicron variant.