COVID-19-Associated Hospitalizations Among Adults During SARS-CoV-2 Delta and Omicron Variant Predominance, by Race/Ethnicity and Vaccination Status-COVID-NET, 14 States, July 2021-January 2022

On March 18, 2022, this report was posted as an MMWR Early Beginning the week of December 19-25, 2021, the causes COVID-19) became the predominant circulating variant in the United States (i.e., accounted for >50% of sequenced isolates).* Information on the impact that booster or additional tions during Omicron predominance is limited. Data from the associated hospitalization rates among adults aged >_18 years predominance, overall and by race/ethnicity and vaccination status. During the Omicron-predominant period, weekly COVID-19-associated hospitalization rates (hospitalizations per 100,000 adults) peaked at 38.4, compared with 15.5 during

Automated summary

This report provides data on hospitalization rates among adults during the Omicron-dominant period, showing a significant increase in weekly COVID-19-associated hospitalization rates.