Reported Cases
As of May 11, 2022, the current 7-day moving average of daily new cases (84,778) increased 30.7% compared with the previous 7-day moving average (64,863). A total of 82,087,117 COVID-19 cases have been reported in the United States as of May 11, 2022.
CDC Nowcast projections* for the week ending May 7, 2022, estimate the combined national proportion of lineages designated as Omicron to be 100%. There are several lineages of Omicron (B.1.1.529, BA.1, BA.2, BA.3, BA.4, and BA.5), and within each are multiple sublineages. COVID Data Tracker shows the proportions of Omicron lineages grouped as follows: the B.1.1.529 lineage (includes BA.1, BA.3, BA.4 and BA.5), the BA.1.1** lineage, the BA.2 lineage, and the BA.2.12.1 lineage. The predominant Omicron lineage in the United States is BA.2. The national proportion of BA.2 is projected to be 56.4% (95% PI 49.3-63.3%). The national proportion of BA.2.12.1 is projected to be 42.6% (95% PI 35.6-49.9%). BA.1.1 is projected to be 0.6% (95% PI 0.5-0.8%) and B.1.1.529 (BA.1, BA.3, BA.4 and BA.5) is projected to be 0.2% (95% PI 0.1-0.4%). Omicron is predicted to be 100% in all HHS regions.
*The median time from specimen collection to sequence data reporting is about 3 weeks. As a result, weighted estimates for the most recent few weeks may be unstable or unavailable. CDC’s Nowcast is a data projection tool that helps fill this gap by generating timely estimates of variant proportions for variants that are circulating in the United States. View Nowcast estimates on CDC’s COVID Data Tracker website on the Variant Proportions page.
**For national data, the proportion of BA.1.1 is shown separately. For regional data, the proportion of BA.1.1 is also aggregated with B.1.1.529.
***Historical cases are excluded from daily new cases and 7-day average calculations until they are incorporated into the dataset for the applicable date. Of 522,870 historical cases reported retroactively, 5 were reported in the current week and 2,316 were reported in the prior week.