Over the past four weeks, Omicron has risen rapidly in estimates, accounting for:
- 8.0% of cases the week ending Dec. 11, 2021
- 37.9% of cases the week ending Dec. 18, 2021
- 77.0% of cases the week ending Dec. 25, 2021
- 95.4% of cases the week ending Jan. 1, 2022
Source: https://www.bbc.com/news/health-55659820