As of December 14, 2022, the current 7-day average of weekly new cases (65,067) decreased 2.9% compared with the previous 7-day average (67,034). A total of 99,705,095 COVID-19 cases have been reported in the United States as of December 14, 2022.
CDC Nowcast projections* for the week ending December 17, 2022, estimate the proportion of lineages designated as Omicron with estimates above 1%: BA.5—and five of its sublineages (BQ.1, BQ.1.1, BF.7, BN.1, and BA.5.2.6)—BA.4.6, and XBB. XBB is a recombinant of two BA.2 sublineages.
The primary Omicron lineages this week are BQ.1.1, projected to be 38.4% (95% PI 35.7-41.3%), BQ.1, projected to be 30.7% (95% PI 28.7-32.8%), XBB, projected to be 7.2% (95% PI 4.2-11.9%), and BN.1, projected to be 4.1% (95% PI 3.5-4.7%) nationally. This week, BQ.1.1 and XBB are increasing in proportion. All other lineages (BQ.1, BA.5, BF.7, BN.1, BA.5.2.6, and BA.4.6) are decreasing in proportion this week compared to last.
See COVID Data Tracker for the proportions of all relevant lineages currently circulating.