Omicron variant may already be in US, Fauci says

  • Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, speaks with Health and Human Services Secretary Alex Azar before receiving his first dose of the COVID-19 vaccine at the National Institutes of Health on Dec. 22, 2020 in Bethesda, Maryland. (Patrick Semansky/Pool/Getty Images/TNS)

The omicron variant, a new strain of COVID-19 triggering panic worldwide, could already be in the United States.