- Omicron variant sweeping across nation, now accounts for 73% of new cases; Moderna 3rd dose effective vs. omicron: COVID-19 updatesUSA TODAY
- The Omicron variant is now dominant in the US: Live updatesCNN
- Christmas travel will fuel Omicron spread in US, Dr Fauci warns – BBC NewsBBC News
- Omicron sweeps across nation, now 73% of new US COVID casesAssociated Press
- Omicron is now the dominant strain of coronavirus in the US, according to the CDCCNN