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CDC Director: Delta variant dominates most U.S. COVID cases, but Omicron is rising rapidly #shorts
CDC: Nearly 75% of cases of COVID-19 is omicron variant
Omicron strain spreads as Delta COVID variant continues to dominate in the U.S.
Delta Variant to dominate U.S. cases
Omicron already replacing delta as most dominate US variant
Former CDC director on what people should do to combat rising Covid cases
Omicron is more transmissible than Delta COVID variant, researchers suggest
Delta variant drives new wave of COVID infections in U.S.
Omicron variant found in more U.S. states as Delta cases rise
Dr. Fauci, health officials discuss Omicron variant as U.S. cases spike | full video
Omicron COVID variant spread highest in New York and New Jersey, CDC says
Coronavirus: WHO experts answer Omicron variant questions from social media – watch live