A rising omicron problem Jan 4, 2022 | NewsOver 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