The Omicron variant of the coronavirus has spread to about one-third of U.S. states, but the Delta version remains the majority of COVID-19 infections as cases rise nationwide, U.S. health officials said on Sunday.
Though the emergence of the new variant has caused alarm worldwide, Dr. Anthony Fauci, the top U.S. infectious disease official, told CNN "thus far it does not look like there's a great degree of severity to it" but he added that it was too early to draw definitive conclusions and more study is needed.
Fauci, in an interview on CNN's "State of the Union," praised South Africa for its transparency and said the U.S. travel ban was imposed at a time "when we were really in the dark" and needed time to study the variant. Many of the cases were among fully vaccinated individuals with mild symptoms, although the booster shot status of some patients was not reported.
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